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At least 793 records · Page 44Linked to original sources
PubMed2007

Surgical resection of gastrointestinal stromal tumors after treatment with imatinib.

BACKGROUND: Surgical resection of gastrointestinal stromal tumors (GISTs) has been the most effective therapy for these rare tumors. Imatinib has been introduced as systemic therapy for locally advanced and metastatic GIST. In this study, the surgical resection rates and long-term outcomes of patients treated with preoperative imatinib for locally advanced primary, recurrent, or metastatic GISTs were evaluated. METHODS: Patients were retrospectively assessed for completeness of surgical resection and for disease-free and overall survival after resection. RESULTS: Forty-six patients underwent surgery after treatment with imatinib. Eleven were treated for locally advanced primary GISTs for a median of 11.9 months, followed by complete surgical resection. All eleven were alive at a median of 19.5 months, and ten were free of disease. Thirty-five patients were treated for recurrent or metastatic GIST. Of these, eleven underwent complete resection. Six of the eleven patients had recurrent disease at a median of 15.1 months. All eleven patients were alive at a median of 30.7 months. Patients with a partial radiographic tumor response to imatinib had significantly higher complete resection rates than patients with progressive disease (91% vs. 4%; P < .001). Of the 24 patients with incomplete resection, 18 initially responded to imatinib but were unable to undergo complete resection after they progressed before surgery. CONCLUSIONS: Preoperative imatinib can decrease tumor volume and is associated with complete surgical resection in locally advanced primary GISTs. Early surgical intervention should be considered for imatinib-responsive recurrent or metastatic GIST, since complete resection is rarely achieved once tumor progression occurs.

Adult↗
PubMed2006

Results of an aggressive approach to resection of locally recurrent rectal cancer.

BACKGROUND: The value of resection for locally recurrent rectal cancer (LRRC) remains controversial. We analyzed outcomes of an aggressive approach to resection of LRRC. METHODS: We conducted a retrospective chart review of 52 consecutive patients who underwent resection of LRRC from September 1997 through August 2005. Overall and disease-free survival (OS, DFS) curves were constructed by the Kaplan-Meier method, and compared by log-rank analysis. Median follow-up time was 29 months (range 3-72). RESULTS: Thirty-one patients (60%) were male. Median age was 60 years (range 36-88). Forty-six of the 52 patients were resected with curative intent, while 6 had known distant metastases at the time of resection. All 52 patients underwent grossly complete resection of local disease, and 41 (79%) had microscopically clear resection margins. An en bloc sacrectomy was performed in 28 (54%) patients. Postoperative mortality was nil; significant complications developed in 42% of patients. The complication rate was higher in patients with sacrectomy than without (50 vs. 33%, P = 0.017, Chi square). For the entire cohort of 52 patients, median OS and DFS were 40 and 24 months, respectively. Survival was equivalent in patients with and without sacrectomy. In the 46 patients who had resection with curative intent, 4-year OS was 48%. Median OS in the six patients with distant metastases at the time of resection was 21 months. OS was predicted by the presence of metastases (P = 0.01), and margin status (P < 0.0001). DFS was predicted by margin status (P = 0.0001). CONCLUSIONS: In this series of patients who underwent resection of LRRC, microscopic margin status was the most significant predictor of OS and DFS. Requirement for en bloc sacrectomy was not associated with inferior survival. Carefully selected patients with distant metastases may benefit from resection of LRRC.

Adenocarcinoma↗
PubMed2006

Pancreatic resection for M1 pancreatic ductal adenocarcinoma.

BACKGROUND: Improved safety of pancreatic surgery has led to consideration of more aggressive approaches, such as resection for primary pancreatic ductal adenocarcinoma (PDAC) with metastatic disease (M1). METHODS: A total of 29 patients who underwent pancreatic resection with resection of associated metastatic disease (interaortocaval lymph node dissection, liver resection, and/or multiorgan resections) were retrospectively identified from a database of 316 R0/R1 pancreatic resections for PDAC. An explorative data analysis of perioperative and clinicopathological parameters, and overall survival was performed by Kaplan-Meier estimation, log rank test, and Fisher's exact test. RESULTS: The overall in-hospital mortality and morbidity of R0/R1 pancreatic resections for M1 disease (n = 29) was 0% and 24.1%, compared with 4.2% and 35.2% of R0/R1 pancreatic resections for M0 disease (n = 287). The median overall survival time was 13.8 months (95% confidence interval [CI], 11.4-20.5), and the estimated 1-year overall survival rate was 58.9% (95% CI, 34.8-76.7) for patients with M1 disease. The median survival in those with metastatic interaortocaval lymph nodes was 27 months (95% CI, 9.6-27.0), whereas it was 11.4 months (95% CI, 7.8-16.5) and 12.9 months (95% CI, 7.2-20.5) for those with liver and peritoneal metastases, respectively. CONCLUSIONS: Pancreatic resections with M1 disease can be performed with acceptable safety in highly selected patients. The survival after interaortocaval lymph node resection is comparable to that of other lymph nodes that do not constitute M1 disease. Resection of liver and peritoneal metastases, although safe in this series, cannot be generally recommended until further controlled trials can be conducted.

Adenocarcinoma↗
PubMed2005

Hepatic resection for breast cancer metastases.

INTRODUCTION: Hepatic resection is an established modality of treatment for colorectal cancer metastases. Resection of breast cancer liver metastases remains controversial, but has been shown to be an effective treatment in selected cases. This study reports the outcome of 8 patients with liver metastases from breast cancer. PATIENTS & METHODS: 8 patients with liver metastases from previously treated breast cancer were referred for hepatic resection between September 1996 and December 2002. Six were eligible for liver resection. The mean age was 45.8 years. The resections performed included 1 segmentectomy and 5 hemihepatectomies of which one was an extended hemihepatectomy. One patient had a repeat hepatectomy 44 months after the first resection. RESULTS: There were no postoperative deaths or major morbidity. The resectability rate was 75%. Follow-up periods range from 6 to 70 months with a median survival of 31 months following resection. There have been 2 deaths, one died of recurrence in the residual liver at 6 months and one died disease-free from a stroke. Of the remaining 4 patients, 1 has had a further liver resection at 44 months following which she is alive and 'disease-free' at 70 months. The one patient with peritoneal recurrence is alive 49 months after her liver resection with 2 patients remaining disease-free. CONCLUSION: Hepatic resection for breast cancer liver metastases is a safe procedure with low morbidity and mortality.

Adult↗
PubMed2001

A comparison of the success of root resected molars and molar position implants in function in a private practice: results of up to 15-plus years.

BACKGROUND: When faced with a furcated molar, today's clinician must decide between a number of treatment options, including root resection, tooth removal, and implant placement. This paper assesses the results in one private clinical practice of root resection and subsequent restoration or molar implant placement and subsequent restoration. Clinical considerations in treatment selection are discussed. METHODS: A retrospective analysis of treated patients was carried out by examining active and inactive patient charts. When patients had discontinued therapy, every effort was made to determine the reason for leaving the private practice, so as to assess the impact of previously undocumented treatment failure on the statistics in question. RESULTS: A total 701 root resected molars and 1,472 molar implants were evaluated after > or = 15 and 13 years in function, respectively. Resection of the distal root of a mandibular molar demonstrated the lowest success rate (75%). All other success rates for various root resected molars in function ranged from 95.2% to 100%. Lone standing implants in second molar positions demonstrated the lowest success rate (85%). All other implant use in molar positions demonstrated a success rate ranging from 97.0% to 98.6%. Root resected molars and molar implants demonstrated the highest degree of failure when they were lone standing terminal abutments. Seven out of 23 (30.4%) root resected molar failures, and 17 of 45 (37.8%) of the molar implant failures were associated with untreated parafunction. Cumulative success rates were 96.8% for root resected molars and 97.0% for molar implants. Success and failure are discussed by tooth and/or implant position, and resected root, where applicable. Possible ramifications of these findings upon treatment planning are also reviewed. CONCLUSIONS: Both molar root resection and appropriate restoration and molar implant placement and restoration demonstrated a high degree of success in function. However, this success rate is markedly affected when either the root resected molar or molar implant is a lone standing terminal abutment. Care must be taken to choose the appropriate treatment modality for a given patient scenario.

Adult↗
PubMed2006

Integrated positron emission tomography and magnetic resonance imaging-guided resection of brain tumors: a report of 103 consecutive procedures.

OBJECT: The aim of this study was to evaluate the integration of positron emission tomography (PET) scanning data into the image-guided resection of brain tumors. METHODS: Positron emission tomography scans obtained using fluorine-18 fluorodeoxyglucose (FDG) and L-[methyl-11C]methionine (MET) were combined with magnetic resonance (MR) images in the navigational planning of 103 resections of brain tumors (63 low-grade gliomas [LGGs] and 40 high-grade gliomas [HGGs]). These procedures were performed in 91 patients (57 males and 34 females) in whom tumor boundaries could not be accurately identified on MR images for navigation-based resection. The level and distribution of PET tracer uptake in the tumor were analyzed to define the lesion contours, which in turn yielded a PET volume. The PET scanning-demonstrated lesion volume was subsequently projected onto MR images and compared with MR imaging data (MR volume) to define a final target volume for navigation-based resection-the tumor contours were displayed in the microscope's eyepiece. Maximal tumor resection was accomplished in each case, with the intention of removing the entire area of abnormal metabolic activity visualized during surgical planning. Early postoperative MR imaging and PET scanning studies were performed to assess the quality of tumor resection. Both pre- and postoperative analyses of MR and PET images revealed whether integrating PET data into the navigational planning contributed to improved tumor volume definition and tumor resection. Metabolic information on tumor heterogeneity or extent was useful in planning the surgery. In 83 (80%) of 103 procedures, PET studies contributed to defining a final target volume different from that obtained with MR imaging alone. Furthermore, FDG-PET scanning, which was performed in a majority of HGG cases, showed that PET volume was less extended than the MR volume in 16 of 21 cases and contributed to targeting the resection to the hypermetabolic (anaplastic) area in 11 (69%) of 16 cases. Performed in 59 LGG cases and 23 HGG cases, MET-PET demonstrated that the PET volume did not match the MR volume and improved the tumor volume definition in 52 (88%) of 59 and 18 (78%) of 23, respectively. Total resection of the area of increased PET tracer uptake was achieved in 54 (52%) of 103 procedures. CONCLUSIONS: Imaging guidance with PET scanning provided independent and complementary information that helped to assess tumor extent and plan tumor resection better than with MR imaging guidance alone. The PET scanning guidance could help increase the amount of tumor removed and target image-guided resection to tumor portions that represent the highest evolving potential.

Adolescent↗
PubMed2004

Laparoscopic versus conventional open resection of rectal carcinoma: A clinical comparative study.

AIM: To evaluate the feasibility of laparoscopic resection of rectal carcinoma and to compare the short-term outcome of laparoscopic procedure with conventional open surgery for rectal cancer. METHODS: Thirty-eight patients with rectal cancer were included in a prospective non-randomized study. The patients were assigned to laparoscopic (n=18) or open (n=18) colorectal resection. Case selection, surgical technique, and clinical and pathological results were reviewed. RESULTS: The operative time was longer in laparoscopic resection group (LAP) than in open resection group (189+/-18 min vs 146+/-22 min, P<0.05). Intraoperative blood loss and postoperative complications were less in LAP resection group than in open resection group. An earlier return of bowel motility was observed after laparoscopic surgery. The overall postoperative morbidity was 5.6% in the LAP resection group and 27.8% in open resection group (P<0.05). No anastomotic leakage was found in both groups. The pathologic examination showed that the length of the resected specimen, the mean number of harvested lymph nodes in laparoscopic resection group were comparable to those in open resection group. CONCLUSION: Laparoscopic total mesorectal excision (TME) for rectal cancer is a feasible but technically demanding procedure. The present study demonstrates the safety of the procedure, while oncologic results are comparable to the open surgery, with a favorable short-term outcome.

Feasibility Studies↗
PubMedDate not supplied

Unilateral rectus resection in the treatment of undercorrected or recurrent strabismus.

BACKGROUND: When surgery is required for an undercorrection or for a recurrent strabismus that is in the same direction as the previous deviation, traditional options have included a rerecession of the previously operated muscle(s), a marginal myotomy of the previously operated muscle(s) with or without a resection of the direct antagonist, or a bilateral resection of the antagonist muscles. While many surgeons prefer to perform a bilateral resection for these reasons, a unilateral resection would be a useful approach for small to moderate deviations. METHODS: Data were collected for patients who had undergone a unilateral rectus resection: age, number of prior surgeries, the preoperative deviation, the postoperative deviation at 1 week, 6 weeks, and 6 months, and the amount of surgery performed. An acceptable postoperative result was considered to be any deviation >8 pd. RESULTS: A resection of a single rectus muscle was undergone by 11 3 patients. Complete data were available on 81 of these patients: 60 underwent a unilateral resection of the lateral rectus and 21 underwent a unilateral resection of the medial rectus. Of those patients undergoing a unilateral lateral rectus resection, 90% were acceptably aligned at the 6-month postoperative exam. Among those patients undergoing a medial rectus resection, 95.2% obtained a successful result. CONCLUSIONS: A unilateral resection of the medial or lateral rectus is an effective tool in the treatment of undercorrected or recurrent strabismus. It is predictable, stable in the immediate postoperative period, and limits surgery to 1 eye.

Adolescent↗
PubMed1998

[Usefulness and limitation of crico-pharyngeal myotomy and laryngeal suspension after wide resection of the tongue or oropharynx].

UNLABELLED: To prevent post-surgical dysphagia in oral or oropharyngeal cancer patients, crico-pharyngeal myotomy and laryngeal suspension are recommended; however, its indication has been controversial. When it was though that patients would lose the mechanisms of laryngeal elevation or mechanisms to produce oropharyngeal pressure we opted for crico-pharyngeal myotomy and laryngeal suspension: total or subtotal glossectomy with bilateral resection of suprahyoid muscles, and wide resection of the oropharynx including the tongue base. In this paper, we report the usefulness and limitation of crico-pharyngeal myotomy and laryngeal suspension after wide resection of the tongue or oropharynx. PATIENTS AND METHODS: From April 1992 to January 1996, 19 patients received circo-pharyngeal myotomys and laryngeal suspensions along with their initial operation for oral or oropharyngeal cancer. Their ages ranged from 28 to 69 years. Fourteen had tongue cancer and 5 had oropharyngeal cancer. We examined the relationship between the ability to have an oral diet and the extent of mobile tongue resection, extent of tongue base resection, and extent of resection of the lateral wall of the oropharynx, reconstruction method, and age. RESULTS: Fifteen of the 19 patients (68%) could have an oral diet when they were discharged. The extent of tongue base resection (more than 50%) and age (> or = 60) significantly affected post-surgical aspiration. Two patients who had total glossectomy with total tongue base resection could have an oral diet. They were 41 and 51 years old. One 35-year-old patient who had total glossectomy with wide tongue base resection (80%) was able to have the same diet as his family. On the other hand, 4 elderly patients (> or = 60) who had wide resection of the tongue base (> or = 50%) could not have an oral diet at all. CONCLUSION: A crico-pharyngeal myotomy and a laryngeal suspension can contribute to the prevention of post-surgical dysphagia. However, if an elderly patient (> or = 60) has had wide tongue base resection (> = 50%), he may not be able to have an oral diet. In these cases, we have to opt for additional methods, such as total laryngectomy, to prevent aspiration.

Adult↗
PubMed2004

Endoscopic ultrasound-assisted endoscopic resection of carcinoid tumors of the gastrointestinal tract.

INTRODUCTION: Usually found in the gastrointestinal tract, carcinoids are the most frequent neuroendocrine tumors. Most of these lesions are located in areas that are difficult to access using conventional endoscopy (small intestine and appendix); carcinoid tumors found in the gastroduodenal tract and in the large intestine can be studied endoscopically; in these cases, if localized disease is confirmed, local treatment by endoscopic resection may be the treatment of choice. Since endoscopic ultrasonography has been shown to be the technique of choice for the study of tumors exhibiting submucosal growth, the selection of patients who are candidates for a safe and effective local resection should be based on this technique. PATIENTS AND METHOD: We selected patients with gastrointestinal carcinoid tumors who were endoscopically treated between 1997 and 2002. Those patients with tumors measuring less than 10 mm, which had not penetrated the muscularis propria, and those with localized disease were considered candidates for endoscopic resection. The endpoints of this study were to assess the effectiveness (complete resection) and safety (complications) of the technique. Follow-up consisted of eschar biopsies performed one month and twelve months after the resection. RESULTS: During the aforementioned period, we resected endoscopically 24 tumors in 21 patients (mean age: 51.7 years; 71.5% males). Most lesions were incidental discoveries made during examinations indicated for other reasons. Resection was indicated in most cases as a result of the suspected presence of a carcinoid tumor after endoscopic ultrasonography. Endoscopic ultrasonography also enabled us to clearly identify the layer where the lesion had originated, as well as the size of the lesion. The carcinoid tumor was removed in 13 cases (54.2%) by using the conventional snare polypectomy technique, in 9 cases (37.5%) assisted by a submucosal injection of saline solution and/or adrenaline, and in 2 cases (8.3%) after ligating the lesion with elastic bands. In all cases the resection was complete, with no recurrence during the follow-up period, and no major complications, except for a single case in which a post-polypectomy hemorrhage occurred that was endoscopically solved. CONCLUSIONS: In properly selected patients, the endoscopic resection of carcinoid tumors is a safe and effective technique that permits a complete resection in all cases with few complications. Endoscopic ultrasonography is the technique of choice for selecting the patients who are candidates for endoscopic resection.

Adult↗
PubMed1999

[Is pancreaticoduodenectomy with portal vein resection indicated in patients with ductal pancreatic carcinoma?].

Infiltration of the portal vein is almost always regarded as a contraindication for pancreaticoduodenectomy in patients with pancreatic cancer. However, progress in many fields has changed the postoperative situation and mortality of pancreaticoduodenectomy is now below 5%. The aim of the present study was therefore to actually evaluate morbidity, mortality and prognosis of extended pancreaticoduodenectomy combined with protal vein resection for adenocarcinoma of the pancreatic head. Between September 1985 and May 1997 315 patients with a ductal pancreatic carcinoma were treated in our hospital. Resection was possible in 96 cases (partial pancreaticoduodenectomy n = 82, total pancreaticoduodenectomy n = 5, left pancreatic resection n = 9). In 10 cases the portal vein or the mesenteric vein had to be resected. Postoperative complications were seen in 25% of all cases after pancreaticoduodenectomy without portal vein resection and in 20% following extended pancreaticoduodenectomy. The mortality was 5% resp. 0% in both groups. The median survival time of patients after pancreaticoduodenectomy without portal vein resection was 11.9 months (R0 resection: 13.6 months; R1/2 resection 8 months) in contrast to 13.4 months in cases with portal vein resection. In conclusion, these results demonstrate that in special cases of adenocarcinoma of the pancreatic head extended pancreaticoduodenectomy with portal vein resection may be indicated. These patients show a better prognosis than those after palliative procedures. Morbidity and mortality of pancreaticoduodenectomy with portal vein resection is not higher as compared to pancreaticoduodenectomy alone.

Adult↗
PubMed2000

Risk of synchronous and metachronous liver resection for colorectal cancer metastases.

There is a discussion if the synchronous large bowel and liver metastatic lesions should be operated at the same time. It is the reason why we tried to find the answer based of our material. We analysed 331 liver resections due to metastatic lesions on the liver. In 61 cases (18.4%) the metastatic tumors were synchronous with large bowel tumors. The synchronic liver resections and large bowel resections were performed in 26 patient's (7.8%) and metachronic resection in 305 cases (92.2%). The policy of our Department is to perform liver resection before large bowel resection in synchronic tumors. The morbidity in the whole material was 19.0%, and mortality 3.3%. The complications ratio in synchronous liver resection was 23.1% and 17.9% in metachronic liver resection. The mortality was 3.9% in synchronous and 3.3% in metachronous liver resection. We concluded that the difference between complications and mortality in synchronous and metachronous liver resection was very little. That means that there is no risk of synchronous liver and large bowel resection.

Age Factors↗
PubMed2000

Safety of simultaneous resections of colorectal cancer and liver metastases.

Liver resection is the only potentially curative method for patients with colorectal cancer metastases and 5-year survival rates are 20%-40%. Simultaneous resection of colorectal cancer and synchronous liver metastases has been recommended if minor hepatectomy is indicated. The purpose of this paper is to analyze the treatment of hepatic colorectal secondaries and to assess the safety of simultaneous and delayed liver resections and relations of morbidity to the extensiveness of hepatectomy and perioperative factors. Analyzed were 21 patients with liver metastases from colorectal cancer operated between 1997 and 1999 in the Clinical Hospital "Sestre milosrdnice". Operating time for simultaneous colorectal and liver resections was not significantly longer compared to liver resections alone. No significant difference in complication rate was found after simultaneous procedures and liver resection alone (38% vs. 31%). Complication rate after major liver resections was not significantly greater than after minor resections (38% vs. 31%). No statistically significant differences were found in operation time and blood replacement between patients who developed postoperative complications and those who did not. In conclusion, simultaneous resections of primary colorectal cancer and liver metastases may be considered safe. Morbidity rates are not significantly different from those after liver resections alone, nor depend significantly upon the extensiveness of liver resection, providing that the operation time and blood loss are within the range observed in this study.

Adult↗
PubMedDate not supplied

Procedure of extended hilar bile duct resection and its application for hilar cholangiocarcinoma.

BACKGROUND/AIMS: Several surgical procedures from hilar bile duct resection to hepatectomy have been adopted for hilar cholangiocarcinoma. However the details of the surgical procedure and the indications for hilar bile duct resection have not been determined. METHODOLOGY: Pathohistological outcome of resected specimens in five patients undergoing extended hilar bile duct resection was reviewed and compared with 12 patients undergoing partial hepatectomy with caudate lobectomy. RESULTS: Extended hilar bile duct resection was used for older patients, cases of choledochal site and less invasive tumor. The mean lengths of the left hepatic duct (21.7 +/- 7.8 mm) and the anterior hepatic duct (18.0 +/- 3.2 mm) in the specimens resected by extended hilar bile duct resection did not differ from those seen in right and left hepatectomy, respectively. Furthermore, extended hilar bile duct resection removed partial caudal hepatic duct. However the length of the posterior hepatic duct removed by extended hilar bile duct resection (14.3 +/- 2.0 mm) was significantly less than that excised in left hepatectomy (19.3 +/- 6.6 mm) (P < 0.05). The histologic positive margin rate of the extended hilar bile duct resection group (40%) was the same as that of the hepatectomy group (50%). Papillary or nodular form tumor tended to have positive ductal margins in both surgical techniques. On the other hand, flat tumor tended to have high positive rates in both ductal and excisional margins even in hepatectomy. Two cases with positive surgical margin died of local recurrences, however another 3 cases with negative surgical margin are alive without recurrences from 8 to 20 months after surgery. CONCLUSIONS: The indication of extended hilar bile duct resection for hilar cholangiocarcinoma is limited to cases in which the infiltration is confined to the hepatic bifurcation, such as type I and type II of Bismuth classification with regard to papillary and nodular macroscopic appearance.

Aged↗
PubMed1975

Somatic and visceral growth, and adiposity in the pig after partial small bowel resection. I. - Variations according to the kinds of operations, to the specific location along the intestinal tract and to the sex of the animals.

The effects of small bowel resection were studied in 123 pure-bred Large White pigs, during 2 separate experiments. The first one aimed at studying the somatic growth in 60 castrated male pigs during a 16 weeks-period, following either a (I) laparotomy, (2) proximal or distal double transsection, or (3) proximal or distal resection of 25 p. 100 of the total small intestine length. Operations were performed at the age of 91 days and 26 kg live weight. Secondly, both grwoth of 63 pigs operated at the age of 97 days and at 28 kg live weight, was studied during a 16 weeks-period, in order to assess the effects of resection of 4m of distal jejunum (i.e. 25 p. 100 of the small intestine), according to the sex of the animals. After slaughtering visceral measurements and indirect measurement of carcass adiposity were made. It appeared that laparotomy was detrimental to continuation of normal growth, whereas resections or sham operations allowed better performances although less than that of control pigs. In short-term studies, proximal resections allowed better results than distal ones; the reverse conclusion could be drawn from long term studies. Small intestine tissue weight was not changed after laparotomy, and was slightly increased after transsection. Sixteen weeks after resection, tissue weight of residual small intestine was not very lower than that of entire small intestine in control pigs. This compensation was better after proximal resection, the apparent local hypertrophy being greater after distal resection. Concerning the sex-dependent effects after partial resection of distal jejunum, there was an improvement of performances (growth/food intake), and a true body growth acceleration in female and castrated male pigs. The morphological compensation of tissue loss was very good in residual small intestine of female pigs, partially assumed by large intestine in normal male pigs, and poor in castrated male pigs. The greatest hypertrophy was always noted in the ileal segment below the resected area. Carcass adiposity (specific gravity) was not significantly modified by the various operations in castrated male pigs, whereas it was significantly decreased after resection in entire male or female pigs.

Adipose Tissue↗
PubMed1992

[Hepatic resections for metastases].

Between January 1981 and December 1990, 79 liver resections were performed for hepatic metastases in 73 patients. Eight of these patients had a repeat resection (2 patients had their first resection performed before 1981). This figure represented 35% of 228 liver resections performed during this period. Mean age was 56.5 years (23 to 81 years). There were 38 men and 35 women. Fifty-four resections were performed for colorectal metastases and 25 resections for secondaries of other origins. There were 45 major hepatectomies (57%), defined by the resection of at least 3 Couinaud segments, and 34 minor resections (less than three segments). In 12 patients, liver resection was associated with excision of the primary tumor. Complications were observed in 25 patients (32%), pulmonary complications being the most frequent. Five re-explorations were necessary: 3 for postoperative bleeding, one for an abdominal abscess and one for intestinal obstruction. Mean postoperative stay was 18 days. There was no mortality for the first liver resections in 71 patients. One death was encountered among the second resections in 8 patients, with a global mortality of 1.3%. Follow-up was obtained for all patients but one (lost to follow-up at 5 years). Actuarial survival for the 50 patients operated on for colorectal secondaries was 98% at 6 months, 83% at 1 year, 46% at 2 years, 24% at 3 years and 15% at 5 years. In non-colorectal secondaries, the survival depended on the nature of the primary tumor but was very different from one patient to another.(ABSTRACT TRUNCATED AT 250 WORDS)

Adult↗
PubMed2003

Influence of bone invasion and extent of mandibular resection on local control of cancers of the oral cavity and oropharynx.

The aim of this paper was to evaluate the influence of bone invasion on treatment outcome among patients with cancers of the oral cavity and oropharynx and to determine whether or not outcome was influenced by the extent of mandibular resection. A review of 127 prospectively documented patients who were treated with marginal or segmental resection for oral (n = 110) and oropharyngeal (n = 17) cancers was undertaken. There were 97 males and 30 females with a median age of 61 years. Clinical T stages were: T1 17 patients, T2 33, T3 22, T4 55. Median followup was 4 years. A total of 94 patients underwent marginal resections and 33 underwent segmental resections. Histological bone invasion was present in 17 patients (16%) in the marginal resection group and 21 patients (64%) in the segmental group (P<0.05). Soft tissue surgical margins were positive in 11 patients (12%) in the marginal group and in seven patients (21%) in the segmental group (P=not significant). Local control did not correlate significantly with T stage, the extent of mandibular resection or the presence of histological bone invasion, but was significantly influenced by positive soft tissue margins (P<0.01). Among patients with bone invasion, the local control rate was higher following segmental resection when compared to marginal resections (87% vs 75%) but this was not statistically significant. Survival was significantly influenced by positive soft tissue margins but not bone invasion or the type of resection. We conclude that bone invasion alone did not predict for local control or survival rates among patients with oral and oropharyngeal cancers. Involved soft tissue margins were highly predictive of local recurrence and decreased survival. Conservative resection of the mandible is safe as long as marginal mandibulectomy does not lead to compromise of soft tissue margins. Segmental resection should be reserved for patients extensive bone invasion or those with limited invasion in a thin atrophic mandible.

Adult↗
PubMedDate not supplied

Hepatic resection in cirrhotic liver for treatment of hepatocellular carcinoma in Egyptian patients. Experience with 140 cases in a single center.

BACKGROUND/AIMS: In many centers hepatic resection is still the treatment of choice for hepatocellular carcinoma in cirrhotic liver. Several factors affect the prognosis; one of them is the extent of resection. This study retrospectively evaluates outcome after different types of hepatic resection in cirrhotic liver. METHODOLOGY: Hepatectomy was performed in 245 patients. From them, 140 patients were subjected to hepatic resection for hepatocellular carcinoma in cirrhotic liver. According to the type of resection the patients were divided into three groups (A, B and C), major resection (group A) in 79 (56.3%), segmental resection (group B) 31 (22.1%) and localized resection (group C) in 30 (21.4%). Early postoperative mortality and morbidity as well as long-term survival and recurrence were assessed. RESULTS: The overall hospital mortality rate was (8.6%) with total complications 26%, recurrence rate 32.8% and median survival was 24 months (3-120). Group A showed high incidence rate of hospital mortality, total complications and hepatic cell failure than the other two types (p>0.05). On the other hand, group C patients showed high incidence of wound infection and recurrence rate after hepatic resection than the other two types (p>0.05). At the end of the study, the median survival was 18 months (4-120), 24 months (3-48) and 24 months (3-120) for the three groups respectively without significant difference. The overall 5-year survival rate was 20%, 0% and 15.3% for the three groups respectively (p>0.05). CONCLUSIONS: Although major liver resection in cirrhotic liver has high incidence of early mortality and morbidity, it gives low incidence of recurrence and better survival in comparison with segmental and localized resection. However it has to be reserved for large tumor in good liver and early cirrhosis.

Adult↗