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PubMedDate not supplied

New endoscope for (laser) endoscopic diverticulotomy.

In the United States, traditional treatment of the hypopharyngeal (Zenker's) diverticulum has been single stage transcutaneous diverticulectomy. Complications following this procedure include mediastinitis, vocal cord paralysis, esophageal stenosis, fistula, and recurrent or persistent diverticulum. Endoscopic diverticulotomy, widely used throughout Europe, is relatively straightforward and efficacious. Transoral management of these diverticulae has allowed symptomatic relief with a low incidence of complications. A new endoscope has been developed to facilitate use of the carbon dioxide laser for endoscopic diverticulotomy. The instrument combines the characteristics of the Dohlman endoscope (bilateral distal slots) with a wider proximal end for microscopic endoscopy, a smoke evacuator channel, a fiberoptic light carrier, and a handle adaptable for suspension microendoscopy.

Aged↗
PubMed1991

The endoscopic Doppler: its value in evaluating gastroduodenal ulcers after hemorrhage and as an instrument of control of endoscopic injection therapy.

In this prospective study of 80 patients with active bleeding from the gastrointestinal tract a Doppler ultrasonographic investigation of the gastroduodenal ulcers was performed, in addition to immediate endoscopic examination. Admitted to this study were ulcers with the stigmata of acute bleeding, such as a visible blood vessel in the ulcer floor, a blood clot, or a black base and Forrest III lesions. In 52 patients Doppler ultrasonography was able to document unequivocally a superficial blood vessel. Complete agreement of endoscopic and Doppler results was obtained in only 49% of the cases. When a blood vessel was positively identified, local injection of epinephrine and polidocanol was carried out. Thereupon, in the further course, the acoustic signal was shifted into deeper regions or disappeared entirely. In 8% of the cases initial sclerosing was followed by a rebleed, which was again treated by injection therapy. None of the patients died of their GI hemorrhage. Endoscopic Doppler ultrasonography is a new and effective procedure that enables objectification of the endoscopic findings. It identifies the indication for proceeding to operative endoscopy and can monitor the effectiveness of the latter.

Adult↗
PubMed2005

Brief history of endoscopic transsphenoidal surgery--from Philipp Bozzini to the First World Congress of Endoscopic Skull Base Surgery.

Since its inception, one of the major issues in transsphenoidal surgery has been the adequate visualization of anatomical structures. As transsphenoidal surgery evolved, technical advancements improved the surgical view of the operative field and the orientation. The operating microscope replaced Cushing's headlight and Dott's lighted speculum retractor, and fluoroscopy provided intraoperative imaging. These advances led to the modern concept of microsurgical transsphenoidal procedures in the early 1970s. For the past 30 years the endoscope has been used for the treatment of diseases of the sinus and, more recently, in the surgical treatment of pituitary tumors. The collaboration between neurological and otorhinolaryngological surgeons has led to the development of novel surgical procedures for the treatment of various pathological conditions in the skull base. In this paper the authors review the history of the endoscope--its technical development and its application--from the first endoscope described by Philipp Bozzini to the First World Congress of Endoscopic Skull Base Surgery held in 2005 in Pittsburgh, Pennsylvania. Specifically, in this review the history of endoscopy and its application in endonasal neurosurgery are presented.

Congresses as Topic↗
PubMed2006

Histologic characteristics of gastric polyps in Korea: emphasis on discrepancy between endoscopic forceps biopsy and endoscopic mucosal resection specimen.

AIM: To investigate histological characteristics of gastric polyps in the Korean population. METHODS: We reviewed endoscopic photographs and medical records of patients with gastric polyps who underwent endoscopic mucosal resection from April 1996 through February 2003. RESULTS: A total of 85 gastric polyps from 74 patients were reviewed. Male-to-female ratio was 1:1.96. Mean age was 59.9 +/- 10.8 years. Multiple polyps were observed in 10.8%. Gastric polyps occurred most frequently in the antrum (58.8%). Pathological results on resected specimens were as follows: tubular adenoma 45.9%, hyperplastic polyp 31.8%, inflammatory polyp 9.4%, hamartoma 3.5%, fundic gland polyp 2.4%, tubulovillous adenoma 2.4%, adenocarcinoma 2.4%, dysplasia 1.1%, and mucosal pseudolipomatosis 1.1%. Discrepancy rate between endoscopic biopsy and pathology of resected specimens was 27.1%. There was no relationship between the size of the polyp and concordance rate. CONCLUSION: There is considerable discrepancy in histologic findings between endoscopic forceps biopsy and resected specimens. Approaches to review of the histology of an entire polyp should be performed, especially when an adenoma is suspected.

Aged↗
PubMed2000

Symptomatic esophageal stricture after endoscopic variceal ligation--success of endoscopic balloon dilation.

Endoscopic variceal ligation is a preferred endoscopic method to treat esophageal variceal bleeding. Esophageal stricture complicated by endoscopic ligation is very unusual. We report a case of symptomatic esophageal stricture after variceal ligation. Endoscopic balloon dilatation was used to treat the stricture successfully. The possible mechanism of stricture formation is discussed.

Aged↗
PubMed2002

[Endoscopic evaluation of the depth of invasion in cases of superficial esophageal cancer in determining indications for endoscopic mucosal resection].

Endoscopic mucosal resection (EMR) should be performed for the treatment of squamous cell carcinoma of the esophagus limited to the lamina propria mucosae (m1 and m2 cancers), because lymph node metastasis is rare in these cases. The lymph node metastasis rate is 6% when cancers reach the muscularis mucosa(m3) or slightly invade the submucosa (sm1). Lymph node metastasis is noted in 47% of esophageal cancers moderately or severely invading the submucosa(sm2 and sm3). Radical esophagectomy is recommended for sm2 and sm3 disease. Type 0-II cancers are candidates for EMR, because 86% remain within the mucosa, while 90% of type 0-I lesions and 96% of type 0-III lesions are submucosal cancers. Among type 0-II cancers, most type 0-IIb lesions are m1 cancer. Among type 0-IIa cancers, 96% are mucosal. Type 0-IIc lesions are frequent among superficial esophageal cancers and 19% reach the submucosa. Endoscopic diffrentiation of m1 and m2 cancers is reliable, since 96% of all m1 and m2 cancers were correctly diagnosed before treatment. In cases with type O-IIc lesions which is most frequent among superficial esophageal cancers, m1 cancer showed very slight depressions with a smooth surface and reddening. Sometimes fine granular changes are seen. They are also delineated as an unstained area by endoscopic toluidine blue-iodine double staining. They showed very slight depressions with a smooth surface and reddening. Sometimes fine granular changes are seen. They are also delineated as an unstained area by endoscopic toluidine blue-iodine double staining. Dark blue dots, spots, or reticular staining are frequently identified in m2 cancers. In cases with m3 or sm1 cancer, coarse granular changes, small nodular elevations, or slightly deeper depressed areas in the m1 and m2 lesions suggest sites of deeper invasion.

Carcinoma, Squamous Cell↗
PubMed1992

[Significance of the ulcer vessel in acute ulcer hemorrhage--value of local endoscopic therapy in combination with endoscopic Doppler ultrasound].

The acute ulcer hemorrhage is one of the most frequent diagnoses in Gastroenterology. In addition to the active hemorrhage the visible ulcer vessel, even if not bleeding at present, is one of the most important prognostic criteria. Numerous controlled studies have shown that with this sign recurrent hemorrhages will occur in up to 81%, resulting in emergency surgery in up to 56% with an associated mortality of up to 21%. By a meta-analysis we could show that prophylactic endoscopic therapy can significantly reduce both the rate of recurrent hemorrhage as well as emergency surgery. If the endoscopic doppler is used as well, as diagnostic as well as follow-up examination, the effectiveness of endoscopic treatment is greatly improved. The numbers we present show that active local endoscopic therapy should be undertaken in a visible ulcer vessel.

Arteries↗
PubMedDate not supplied

Comparison of characteristics of recurrent esophageal varices after endoscopic ligation versus endoscopic ligation plus sclerotherapy.

BACKGROUND/AIMS: The characteristics of recurrent esophageal varices after endoscopic variceal ligation (EVL) plus endoscopic injection sclerotherapy (EIS) versus EVL alone, including the number of additional treatments and patterns of recurrence have been compared. METHODOLOGY: Thirty-four patients with cirrhosis and esophageal varices were treated by EVL alone (EVL group), and 46 patients were treated by EVL followed by extravariceal injection sclerotherapy (EVL+extraEIS group). RESULTS: Fewer treatment sessions were needed (p<0.005), and more O-rings were required (p<0.0001) in the EVL group than in the EVL+extraEIS group. The 1- and 3-year cumulative recurrence rates were higher in the EVL group (81.3% and 93.8%) than in the EVL+extraEIS group (62.8% and 91.5%) (p<0.05). Endoscopic examination at first recurrence showed varices of a more severe form (p<0.001), but less frequently having the red color sign (p<0.0001), and intramucosal venous dilatation (p<0.0001) in the EVL group than in the EVL+extraEIS group. The number of rehospitalizations for additional treatment was lower (p<0.0001) and more patients could be managed with only endoscopic treatment for recurrent varices in the EVL group than in the EVL+extraEIS group (p<0.05). CONCLUSIONS: Even if the overall rate of variceal recurrence was higher, fewer treatment sessions were needed, and the number of rehospitalizations for these additional treatments was lower in the EVL group than in the EVL+extraEIS group. Multiple sessions of EVL are an effective strategy for the treatment of esophageal varices.

Aged↗
PubMed1990

Combined endoscopic and surgical gastrostomy when percutaneous endoscopic gastrostomy is contraindicated.

The resurgence of enteral feeding, as both a more physiologic and cost-effective means of alimenting patients, has coincided with the increased popularity of endoscopically placed gastrostomies. Indeed, numerous retrospective studies have shown that percutaneous endoscopic gastrostomy (PEG) is superior to its surgical counterpart. There are, however, both absolute and relative contraindications to percutaneous placement. Reported here are three patients who were poor surgical candidates, yet had contraindications to percutaneous placement. Described is a method of combined endoscopic and surgical placement under local anesthesia used successfully in these patients. General anesthesia and laparotomy were not required. A 2-cm incision with endoscopic guidance was used and the gastrostomy was placed under direct vision and secured with a gastric purse string and sutured to the abdominal wall. There was no morbidity or mortality among the three cases reported. All gastrostomies were considered functional within 48 hrs. The authors feel this method is an excellent alternative when PEG is contraindicated. In addition, it may represent the safest and most effective method of gastrostomy placement in the majority of patients requiring a gastrostomy.

Adult↗
PubMed1989

[Endoscopic-radiologic diagnosis and therapy of the bile ducts. Results of endoscopic papillotomy].

Endoscopic-radiologic methods for demonstrating the hepatobiliary and pancreatic ducts are an integrated part of the diagnostic spectrum of gastroenterologic centers. At the Charité since 1975 we have made more than 5,500 endoscopic-retrograde cholangio-pancreaticographies (ERCP's). This method provides immediately or later an adequate therapy as an alternative to the otherwise necessary surgery. The most frequently used and basic method is endoscopic papillotomy (EPT). In most cases it precedes endoscopic removal of concrements, prosthetic drainage of biliary pathways or extracorporal shockwave lithotripsy (ESWL). Since 1977 we have carried out 2,050 EPT's at the Charité, more than 60% of these for patients of higher age (above 60). With 98.3% successful interventions complications were seen in only 4.7% of the cases. The influence of close interdisciplinary cooperation of endoscopicists and radiologists on the results of the investigation and the rate of complications is discussed.

Adult↗
PubMed1988

Endoscopic sclerotherapy versus endoscopic variceal ligation: esophageal symptoms, complications, and motility.

Endoscopic sclerotherapy is an effective method for treating bleeding esophageal varices. However, a number of complications may limit its usefulness. A newly developed method for treating bleeding varices, endoscopic variceal ligation, that uses small rubber bands to occlude and eradicate the varices, may cause less damage to the esophagus. Twenty-eight patients (seven with no prior treatment, eight undergoing sclerotherapy, and 12 undergoing variceal ligation) were evaluated with a symptom questionnaire and esophageal manometry. The lower esophageal sphincter (LES) pressures in the three groups did not differ. The percent LES relaxation was significantly (p = 0.04) less in the sclerotherapy group than in the untreated group. Contraction waves in the esophageal body were not different in amplitude, duration, and propagation speed in the three groups. There was no increase in the amount of heartburn after either form of treatment. Eight of the nine sclerotherapy patients had a stricture after treatment that required dilatation, whereas none of the ligation patients had strictures. We conclude from this that early in the course of sclerotherapy, stricture formation is common, but any long-lasting adverse effect on esophageal function is minimal. We also conclude variceal ligation therapy causes less esophageal dysfunction and has fewer local complications. Thus, endoscopic variceal ligation may be a safer and more easily tolerated alternative to endoscopic sclerotherapy.

Adult↗
PubMed1993

[Endoscopic prosthesis insertion in the palliative treatment of malignant esophageal stenosis. (Endoscopic esophageal prosthesis)].

We report our experience with endoscopic esophageal prosthesis in the treatment of 82 patients with advanced malignant oesophageal stenosis. The cause of the stenosis was an esophageal or esophagogastric cancer in 75 cases and a bronchogenic cancer in 7 patients. In 18 cases a tracheobronchial fistula was also present. A silicone tube (Atkinson) was used in 58 patients, a polyvinyl tube (Wilson-Cook) in 22 cases and a self-expanding tube in the remaining 2 patients. There was no technical failure in the insertion of the prosthesis. A normal feeding was possible in 71 of the 82 patients (86%) within 48 after the intubation. Major complications occurred in 8 cases (9.7%), 4 patients with esophageal perforation and 4 cases with aspiration bronchopneumonia. Postoperative mortality rate was 7.3%, one patient with perforation, 3 cases with aspiration bronchopneumonia and 2 patients with sepsis. The prosthesis partially displaced in 9 cases, but could be endoscopically replaced in all of them. The displacement of the prosthesis was complete in 3 patients, one of which needed a surgical procedure to remove the tube. The prosthesis was bunged up by a solid meal bolus in 4 cases, but an endoscopic procedure was successful in removing the bolus. Therapy with laser was necessary in two cases with self-expanding prosthesis obstructed by tumoral growth. We conclude that, in malignant esophageal stenosis, the endoscopic implantation of esophageal endoprosthesis is an effective, cheap and relatively safe palliative therapeutic alternative with a low postoperative mortality rate.

Adult↗
PubMed1998

Endoscopic septal spur resection in combination with endoscopic sinus surgery.

To assess the possibilities and limitations of endoscopic septal spur resection in combination with endoscopic sinus surgery, 40 consecutive patients were prospectively evaluated. All patients suffered from chronic sinusitis and presented with a posterior septal spur. The spur resection was mainly done because of impaction on the middle meatus and was in general performed after the sinus procedure, if technically possible. Although not completely painless, the septal spur resection could be easily performed under local anesthesia. The procedure took on average less than 5 minutes. The immediate postoperative period was always uneventful and no septal perforations were recorded at six weeks. There were no late complications. In conclusion, endoscopic resection of a septal spur can be performed safely in combination with endoscopic sinus surgery and contributes with minimal additional morbidity to the surgical success.

Adult↗
PubMed1997

Randomised trial of endoscopic balloon dilation versus endoscopic sphincterotomy for removal of bileduct stones.

BACKGROUND: Endoscopic sphincterotomy (EST) for the removal of bileduct stones is associated with acute complications and a permanent loss of biliary-sphincter function. Endoscopic balloon dilation (EBD) causes less trauma to the biliary sphincter, but may be less effective in allowing stone removal. METHODS: 218 consecutive patients with bileduct stones on endoscopic retrograde cholangiopancreatography (ERCP) were enrolled. 202 who met all eligibility criteria were randomly assigned EST or EBD. The patients were observed in hospital for at least 24 h and followed up at 1 month and 6 months. Complications were classified by an expert panel unaware of treatment allocation and outcome. Analysis was done by intention to treat. FINDINGS: After a single ERCP, all stones were removed from 92 (91%) of 101 patients assigned EST and 90 (89%) of 101 assigned EBD (p = 0.81); in nine of the latter, successful removal required additional EST. Mechanical lithotripsy was used to fragment stones in 31 EBD procedures and 13 EST procedures (p < 0.005). Early complications (before 15 days) occurred in 24 EST patients and 17 EBD patients (p = 0.29). One patient died of retroperitoneal perforation after EBD. Four patients had bleeding after EST. Seven patients in each group had pancreatitis. Complications during follow-up occurred in 23 EST patients and 18 EBD patients (p = 0.48). Acute cholecystitis was observed in seven EST patients and one EBD patient (p < 0.05). INTERPRETATION: The success rate of EBD was similar to that of EST. We found there is no evidence of the previously suggested higher risk of pancreatitis with EBD and suggest that EBD is preferred in patients at risk of bleeding after EST. Preservation of biliary-sphincter function after EBD may prevent long-term complications and reduce the risk of acute cholecystitis during follow-up. This procedure is a valuable alternative to EST in patients with bileduct stones.

Adult↗
PubMed2004

Endoscopic balloon dilation of the biliary sphincter compared to endoscopic biliary sphincterotomy for removal of common bile duct stones during ERCP: a metaanalysis of randomized, controlled trials.

OBJECTIVES: To compare the effect of endoscopic balloon dilation (EPBD) of the papilla with that of endoscopic biliary sphincterotomy (EST) in the treatment of patients with common bile duct stones. METHODS: Searches of computerized bibliographic and scientific citations, and review of citations in relevant primary articles. Eight fully published prospective, randomized trials in English that compared EPBD with EST for the removal of common bile duct stones were subjected to metaanalysis. RESULTS: EPBD compared with EST resulted in similar outcomes with regards to overall successful stone removal (94.3% vs 96.5%) and overall complications (10.5% vs 10.3%). Bleeding occurred less frequently with EPBD (0% vs 2.0%, p = 0.001). Post-ERCP pancreatitis occurred more commonly in the EPBD group (7.4% vs 4.3%, p = 0.05). No significant differences were seen in the rates of perforation or infection. Patients undergoing EPBD were more likely to require mechanical lithotripsy for stone extraction (20.9% vs 14.8%, p = 0.014). CONCLUSIONS: On the basis of lower rates of bleeding, EPBD should be the preferred strategy over EST for endoscopic removal of common bile duct stones in patients with coagulopathy. Although EPBD is theoretically attractive for use in young patients for biliary sphincter preservation, the rate of pancreatitis is higher with EPBD and cannot be routinely recommended at this time.

Ampulla of Vater↗
PubMedDate not supplied

Duodenal perforation in course of endoscopic retrograde cholangiopancreatography-endoscopic sphincterotomy. Therapeutic considerations.

AIM OF THE STUDY: To define the therapeutic program for the treatment of perforative complication of the duodenum in course of endoscopic retrograde cholangio-pancreatography (ERCP) with endoscopic sphincterotomy (ES). MATERIAL OF THE STUDY: In the period from 1997 to 2003, 5 duodenal perforations occurred during 101 ERCP/ES (4.95%), executed in two digestive endoscopic centres. Three patients were operated in emergency (duodenostomy, external biliary drainage, gastric-enteric-anastomosis). The other two were treated conservatively with nasal-duodenal drainage in aspiration. RESULTS: The postoperative complications were modest. Anyway there were no signs of sepsis nor of retro/endoperitoneal purulent collections. Biliary drainage, upon radiologic control, and duodenostomy, were removed within the 4th postoperative week. There was no mortality. DISCUSSION: Immediate surgery was performed when the presence of the radio-contrast in the retroperitoneum was persistent. In case of retroperitoneal and/or small perforations, we preferred early oral intake, trusting on the diversion of the biliary and duodenal secretions. The point form perforations, without persistence of radio-contrast, were treated by the conservative approach. CONCLUSION: The proposed treatment of duodenal perforation in course of ERCP was efficacious and safe, and avoided in our experience every risk of septic evolution.

Cholangiopancreatography, Endoscopic Retrograde↗
PubMed1995

Changes in portal hypertensive gastropathy after endoscopic variceal sclerotherapy or ligation: an endoscopic observation.

To determine the effect of endoscopic variceal sclerotherapy or ligation on portal hypertensive gastropathy, 90 cirrhotic patients with esophageal variceal bleeding were randomized to receive sclerotherapy (n = 44) or ligation (n = 46). Follow-up endoscopic observations of the gastric mucosa were recorded at 3-month intervals after variceal eradication. Clinical characteristics in both groups were similar. Probability for a change in the severity of portal hypertensive gastropathy was not related to method of eradication. Most cases of portal hypertensive gastropathy that changed in severity returned to baseline status with time, but the return was faster after ligation than after sclerotherapy. According to the results of multivariate analyses, sclerosant volume was the only factor associated with a significant difference between the group with static gastropathy (n = 15) and that with dynamic change in gastropathy (n = 23) after sclerotherapy. No relevant factors were found in the patients receiving ligation. We conclude that changes in the severity of portal hypertensive gastropathy after endoscopic variceal sclerotherapy or ligation are reversible. Most cases of gastropathy return to baseline status sooner or later.

Esophageal and Gastric Varices↗
PubMed2002

Evaluation of unexplained acute and acute recurrent pancreatitis using endoscopic retrograde cholangiopancreatography, sphincter of Oddi manometry and endoscopic ultrasound.

BACKGROUND AND STUDY AIMS: Unexplained pancreatitis represents a diagnostic challenge. The aim of this study was to determine the diagnostic utility of endoscopic retrograde cholangiopancreatography (ERCP) with sphincter of Oddi manometry (SOM), bile analysis, and endoscopic ultrasound (EUS) in evaluating such patients. PATIENTS AND METHODS: Of 162 patients referred for evaluation of pancreatitis, 72 with a known cause were excluded. The remainder ( n=90) was classified as having prior acute ( n=24) or recurrent acute pancreatitis ( n=66). Bile sampling and SOM were performed at the time of ERCP. EUS was used to assess for tumors and for chronic pancreatitis. Clinical outcomes were evaluated by questionnaire. RESULTS: ERCP was successful in 88/89 patients (99 %). Manometry was successful in 63/67 patients (94 %), and 56 patients underwent EUS. Findings were categorized into five distinct etiologies: sphincter of Oddi dysfunction (SOD) ( n=28; 31 %), pancreas divisum ( n=18; 20 %), biliary ( n=18; 20 %), idiopathic ( n=18; 20 %) and tumor-related ( n=8; 9 %). Features of moderate or severe chronic pancreatitis by EUS and ERCP criteria were found in 18 patients (21 %); an additional nine patients had chronic pancreatitis by EUS criteria alone. EUS identified all the tumors. The condition was improved in 96 % of all patients undergoing endoscopic therapy. CONCLUSION: An etiology was identified in the majority of patients with unexplained pancreatitis. SOD represented the most common finding. Moderate to severe chronic pancreatitis was found in over one-fifth of these patients. Bile analysis, SOM, and EUS are useful tools in the evaluation of unexplained acute pancreatitis.

Acute Disease↗