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Morphologic and immunologic studies of a human colon tumor cell line (SW-48).

A permanent human tissue culture cell line (SW-48) has been established from an adenocarcinoma of the transverse colon. Cells in the center of early colonies were cuboidal and loosely bound; cells on the periphery of the same colonies were more columnar, the nuclei were displaced toward the basal region, and the free surface formed stunted microvilli. These columnar cells ofter aligned themselves to resemble normal absorptive tissue. Carcinoembryonic antigen (CEA) was identified by immunofluorescent microscopy on the surface membrane of the tumor cells. Significantly more CEA could be isolated from the culture medium than from the whole cells. On agar gel diffusion analysis with a monospecific anti-CEA serum (G.P. 32), SW-48 CEA and CEA preparations from solid tumors demonstrated complete identity.

Adenocarcinoma↗

Colonic ischemic necrosis following therapeutic embolization.

Transcatheter embolization of the middle colic artery for diverticular bleeding was followed by ischemic necrosis in the transverse colon at the site of previous anastomosis and stricture formation. This is a potential complication of intra-arterial embolization for colonic bleeding.

Aged↗

Colon interposition for esophagus in children.

In 25 years, from 1959 to 1984, esophageal substitution was performed in 32 patients. In most, the transverse colon was used, brought through the left chest on a vascular pedicle of the left colic artery. Indications for operation included: 21, esophageal atresia; 5, caustic injury; 3, peptic stricture; 2, esophageal varices with previous splenectomy; and 1, cartilagenous hamartoma of the esophagus. Six patients had failed prior reconstructions (1, gastric tube; 2, intrathoracic stomach; 1, presternal jejunum; 1, sloughed colon segment, 1, extensive stricture after primary repair). There was one postoperative death from fluid overload early in the series. Two patients had a localized leak at the upper anastomosis in the neck; neither resulted in stricture. One patient had a side leak in the lower intrathoracic colon, probably from an anchoring suture placed too deeply. Most patients had pyloroplasty with their operation. Four who did not required one later. Four patients required late reoperation for redundancy of the lower colon segment which emptied poorly; one lower colon was revised for stricture from exstrinsic compression at the substernal hiatus and another one for an inflammatory pseudopolyp with bleeding. There was no loss of a colon segment from ischemia. There is follow-up on all but one patient. Nineteen are more than ten years postoperative (mean of 18 years). Growth was assessed in that group. In atresia patients growth correlated with weight preoperatively and the presence or absence of associated anomalies. In the others growth was excellent in all but one patient. In our experience the colon conduit provides an excellent substitute esophagus for pediatric patients. The operation should have relatively low rate of major complications, most of which are avoidable, and most of which can be corrected to give a satisfactory long-term result.

Age Factors↗

Colonic filiform polyposis and a malignant adenomatous polyp.

We have reported a case of pseudopolyposis in the unusual form of filiform polyps in the transverse colon with an adenomatous polyp in the sigmoid colon that had a focus of malignant degeneration. The patient did not have any significant past history of inflammatory bowel disease.

Adenoma↗

Cancer of the colon during pregnancy. A review of the literature and report of a case associated with ulcerative colitis.

The first case of adenocarcinoma of the transverse colon and splenic flexture during pregnancy associated with ulcerative colitis is reported. The patient presented with perforation and widespread metastatic disease. After 10 years' duration of symptoms of ulcerative colitis, the risk of coexisting cancer of the colon is 3 to 5% each year. As ulcerative colitis frequently coexists with pregnancy, the obstetrician needs to be alert to the potential for malignant changes in these patients. With the addition of this patient, there are now 18 reported cases of cancer of the colon during pregnancy. These 18 cases are reviewed especially as to management, outcome of the pregnancy, and prognosis.

Adenocarcinoma↗

Simple clinical assessment of colonic response to food.

The colonic response to food (CRF) is an integrated function of the colon that has been poorly studied in clinical practice. This study describes a new method to measure it, based on the progress of radio-opaque markers, and shows the results in healthy subjects and in patients with irritable bowel syndrome (IBS). Thirty healthy subjects and 43 patients suffering from IBS were studied. Two studies of colonic transit time (CTT), at rest and after eating a standard test meal, were performed. CRF was quantified by calculating the variation in number of markers in each zone of interest of the large bowel using X-ray films of the abdomen taken before and after eating. The results were as follows: (1) CRF is characterised by caudal propulsion of the colonic contents in the two groups. In controls, there is emptying of the cecum-ascending colon region and filling of the distal large bowel. In IBS patients, only emptying of the left transverse colon and the splenic flexure is found. (2) IBS patients have a delayed CTT because of slowing in the right and left colon, and this is both before and after a meal. The determination of the movements of markers after eating is a simple method that is useful in clinical practice to evaluate CRF.

Adult↗

A case of aggressive neuroendocrine carcinoma of the stomach.

An 18 cm x 16 cm x 10 cm tumor of the stomach, invading the left lobe of the liver, pancreatic body and tail, and transverse colon, with peritoneal deposits on the major omentum, was resected by total gastrectomy plus left hepatic lobectomy, transverse colectomy, distal pancreatectomy, splenectomy, and omentectomy. Histopathologically, the tumor consisted of large uniform cells with significant nuclear atypia, showing solid growth patterns with occasional small nests without adenocarcinoma components. Immunohistochemical investigations of the neoplastic cells confirmed the tumor as a neuroendocrine (NE) carcinoma. molecular analyses disclosed loss of heterozygosity at the MEN1 gene locus on chromosome 11q13. Recurrence occurred at the hepatic hilus and incurred obstructive jaundice 2 months after surgery. Following percutaneous transhepatic biliary drainage, intensive chemotherapy (20 mg/m(2) cisplatin on days 1-5 div, 100 mg/m(2) etoposide on days 1, 3, and 5 div, and 800 mg/m(2) 5-fluorouracil on days 1-5 bolus iv) was started. The recurrent tumor shrank dramatically, and could not be detected on image modalities after five courses of chemotherapy. The patient was well and free of symptoms without biliary drainage for 5 months. Then he began to present with jaundice again, and died of acute massive dissemination 7 months after surgery. An aggressive form of NE carcinoma has been known to be associated with an extremely poor prognosis. However, it is notable that treatment with extensive surgery and intensive chemotherapy could contribute to an improvement in quality of life even if the beneficial effect lasted for only half a year.

Antimetabolites, Antineoplastic↗

Does the position of the alimentary limb in Roux-en-Y gastric bypass surgery make a difference?

Intestinal obstruction and other complications have been reported following Roux-en-Y gastric bypass (RYGB) surgery. There is controversy of whether the alimentary limb should be placed in the retrocolic or antecolic position. A retrospective analysis was performed on 444 patients undergoing RYGB surgery for morbid obesity during a six year period. During operation, the surgeon chose the positioning of the 75-cm alimentary limb based upon technical consideration (the presence of adhesions from prior surgical procedures, thickness of the transverse mesocolon and mobility of the small bowel mesentery). Group A (216) patients had placement of the Roux limb anterior to the transverse colon, and group B (228) patients had placement of the limb through an opening created in the transverse mesocolon. The average age was 40 years (range 19-64) and the body mass index ranged from 40 to 75 kg/m2. Patients were followed for 24-86 months (mean 36 months). Any patients lost to follow-up were excluded. The average age of patients in the study was 40 years (range 19-64 years). Patients in both groups were similar in their body mass index and demographic characteristics. Group A had 16 patients (7.4%) that had early intolerance to enteral intake, compared to 13 patients in group B (5.7%, P>0.05). Thirteen patients required reoperation for intestinal obstruction (seven patients in group A and six patients in group B (P>0.05). Development of anastomotic stricture occurred in one patient (0.5%) in group A and three patients (1%, P>0.05) in group B. There were no differences in mean operating room times, hospital length of stay, and excess weight lost. No other complications during the follow-up period were attributed to the position of the alimentary limb. Placement of the Roux limb in the antecolic position is may be technically more feasible in some patients and does not appear to be associated with more complications. It avoids the risk of an internal hernia through the transverse and does not appear to be associated with feeding difficulties in the early or late postoperative period.

Adult↗

Is coffee a colonic stimulant?

BACKGROUND: It is unclear if ingestion of coffee affects colonic function and if this effect is due to its caffeine content. We investigated the effects of coffee on colonic motor activity in healthy humans. METHODS: We performed ambulatory colonic manometry by placing a six-sensor solid-state probe up to the mid-transverse colon in 12 healthy subjects. The following day, over a 10 h period, subjects received four stimuli: 240 ml of three drinks at 45 degrees C in random order: black Colombian coffee (150 mg caffeine), decaffeinated coffee or water and 1000 kcal meal. We analyzed the effects of each stimulant on colonic motor responses. RESULTS: Caffeinated coffee, decaffeinated coffee and meal induced more activity in the colon with a greater area under the curve of pressure waves (P < 0.01) and a greater number of propagated contractions (P < 0.05) when compared with water. Caffeinated coffee, decaffeinated coffee and meal induced greater (P < 0.05) motor activity in the transverse/descending colon when compared with the rectosigmoid colon. The effects of decaffeinated coffee on colonic motility were not significantly different from those of water or caffeinated coffee and were lower (P < 0.05) than that of a meal. CONCLUSION: Caffeinated coffee stimulates colonic motor activity. Its magnitude is similar to a meal, 60% stronger than water and 23% stronger than decaffeinated coffee.

Adult↗

[Metachronous carcinoma of the colon: report of a clinical case].

The Authors deal with a rare case of 'meta-metachronous' carcinoma of the colon. A seventy years old man was admitted to ward after being diagnosed an adenocarcinoma of the transverse colon. The anamnestic data pointed out that the patient had already been operated twice for the colon carcinoma, which had been diagnosed in the left colon and in the cecum respectively seven and two years before. A colonoscopy performed sixteen months before did not show any lesion of the residual colon. It is likely that tiny lesions, which were still in the adenoma phase, were not diagnosed by the endoscopy; it is also possible that the adenoma-carcinoma sequence was extremely fast. On the basis of this experience the Authors recommend that patients with metachronus carcinoma undergo either frequent controls or a preventive subtotal colectomy.

Adenocarcinoma↗

[Diaphragmatic hernia following pneumonectomy; report of a case].

We report a case of diaphragmatic hernia following left pleuropneumonectomy. A 70-year-old man was referred to our hospital after tube drainage for 3 months due to left pyothorax. He had a past history of left lung tuberculosis. Pleuropneumonectomy with partial resection of the muscle layer of the diaphragm was performed because adhesion of pleurae was severe. On the 19th postoperative day, he started to develop a slight fever. Chest X-ray and computed tomography (CT) demonstrated diaphragmatic hernia. On the 22nd postoperative day, we performed surgery because panperitonitis developed. At laparotomy, the transverse colon was pierced by the cut end of the rib. We successfully repaired the diaphragm and established transverse colostomy. The patient has been in good health for more than 10 years after the surgery.

Aged↗

[Colonic atresia. Which surgical treatment?].

We report seven cases of congenital colonic atresia over a 13 year period (1975-1988). The atresia was located in the ascending or transverse colon (4 cases), or in the descending or sigmoid colon (3 cases). According to Bland-Sutton classification, one patient was a type I, five were either a type II or III, and for the last patient the type was not precise. Three infants had associated malformations: jejunal atresia (case n. 6), intestinal malrotation (case n. 5), and gastroschisis and jejunal atresia. This last patient, in whom jejunal and colonic atresias were autopsy findings, died after a Schuster procedure for gastroschisis closure. The six other neonates survived. Five of them underwent emergency colostomy and delayed anastomosis when general conditions were stable (2 to 10 months after colostomy). The sixth neonate (case n. 2) was treated by colonic resection and primary ileocolic anastomosis. Two patients had postoperative complications, ie, anastomotic leak (case n. 4) or disfunction (case n. 2), which were successfully treated by another operation. The outcome, one year after the onset of the disease, was good for 5 out of the 6 survivors. All these five patients were normally passing stools, once or twice a day, with no abdominal distension. One patient (case n. 6) had a short bowel syndrome secondary to a jejunal atresia, with intermittent watery stools and abdominal distention. We reviewed the 161 cases of colonic atresia from English and French experience since 1960. The overall mortality rate is 25%. Associated malformations and infection are the main causes of death. The rate of anastomotic complications is high (15%).(ABSTRACT TRUNCATED AT 250 WORDS)

Anastomosis, Surgical↗

Megacolon with myenteric hypoganglionosis in a foal.

A 6-month-old Clydesdale filly had chronic abdominal distention and intermittent febrile episodes. Abdominal surgery revealed impaction of the right dorsal colon, which was relieved by evacuation of contents through an enterotomy. Four days after surgery, abdominal distention recurred and progressed. The filly was euthanatized. Necropsy revealed the right dorsal colon to be markedly distended with digesta. Microscopically, there was a marked reduction in myenteric ganglion cells in the right dorsal colon and cecum and mild to moderate reduction of myenteric ganglion cells in the left ventral and transverse colon.

Animals↗

[Perioperative morbidity and mortality in colon resection for colon cancer].

The operative risk of colon resections was evaluated by a retrospective analysis of 231 according patients who were operated on between 1984 and 1988. Mean age of the patients was 70 years with a range from 37 to 91 years. Colonic resection consisted of ileocecal resection in 3 cases, right hemicolectomy in 144 cases, segmental resection of transverse colon in 10 cases, left hemicolectomy in 22 cases, resection of sigmoid colon in 77 cases and 5 times a subtotal colectomy was performed. In two patients (0.9%) an anastomotic leak occurred. Three patients were reoperated on: one due to an anastomotic disruption, two others due to a mechanical small bowel obstruction. Two patients (0.9%) died due to systemic complications without any evidence of anastomotic or wound problems. Thus a low morbidity and mortality of colonic resection is documented in our study. Factors contributing to these results are a standardized bowel preparation, perioperative antibiotics and modern anaesthetic techniques.

Adult↗

Colonic complications of pancreatitis.

A retrospective review of 296 patients referred for surgical management of pancreatitis from 1964 to 1992 revealed that 18 (6.1%) had colonic complications. Of seven patients with chronic pancreatitis, six developed pancreatocolonic fistulas. One had stenosis of the transverse colon, which resolved after pancreatic cystjejunostomy, three were managed with local fistula excision and simple colon closure, three had segmental colectomy, and in one the fistula closed spontaneously with expectant management. Three patients had concomitant lateral pancreaticojejunostomy, and two had a cystjejunostomy. There were two postoperative complications, but no mortality. Eleven patients had acute necrotizing pancreatitis. Seven developed segmental colonic infarction that required partial colectomy. Four had colonic fistulas, two managed with partial colectomy and colostomy, and two managed nonoperatively. Eleven patients developed major postoperative complications; four died, two from sepsis and multiorgan failure and two from recurrent hemorrhage from a necrotic pancreatic bed. Our findings indicate that the presentation, management, and outcome of colonic complications differ in chronic and acute pancreatitis. In chronic pancreatitis, pancreatocolonic fistula predominated and could be managed either with local excision or segmental resection of the colon with excellent results. Simultaneous surgical correction of associated pancreatic pathology was possible in five patients. In acute necrotizing pancreatitis, colonic infarction secondary to the necrotizing inflammatory process was frequent and required colon resection. There was substantial morbidity and mortality in spite of treatment with colectomy.

Acute Disease↗

Primary repairing in penetrating colon injuries.

BACKGROUND/AIMS: The large bowel is injured in about 10% of penetrated abdominal injuries. Primary repair with colostomy has been discussed recently. MATERIALS AND METHODS: Between 1987 and 1995, sixty-five patients were operated on with penetrated colon injuries were treated with primary repair without colostomy. Any patient with one or more of the following criteria was excluded: Age > 60 years, blood pressure < 80/60 mmHg, time from injury to treatment > 8 hours, Penetrating abdominal trauma index > 50. RESULTS: The mean age of the patients was 31 and female/male ratio was 1/7. Fifty-one patients (78.5%) were exposed to colon injury by stabbing and 14 patients (21.5%) by gunshot. The most frequently injured segment was the transverse colon (36.9%). The liver was the most commonly injured organ associated with colon injury (32.3%). Colon wounds of 48 patients (73.8%) were treated with simple repair consisting of meticulous debridement. All gunshot wounds (14 patients) and 3 of the stab wounds were treated with segmentary resection and two layered anastomosis because of the massive colonic wall injury and/or impairment of the blood supply. The most common postoperative complication was wound infection (12.3%). Intraabdominal infection and leakage of the anastomosis were not observed. CONCLUSION: Primary repair or, if necessary, segmentary resection and anastomosis will be more appropriate in civilian colon injuries.

Adult↗

Sequential herniation of stomach, then colon through the aortic hiatus.

A patient with a large paraesophageal hernia had a Nissen fundoplication via laparoscopy. He returned a year later with the transverse colon herniated into the chest. At operation, the hernia ostium was found to be the aortic hiatus. We believe that the original ostium was missed because of the limited exposure of the video-laparoscopic technique.

Aged↗

Right-sided ulcerative colitis.

This report describes a case of right-sided ulcerative colitis in which multiple shallow ulcers and erosion with symmetric luminal stenosis were distributed segmentally from the ascending colon to the cecum, with a skip lesion composed of superficial erosions in the right half of the transverse colon. Both the rectum and the left colon were spared at the time of onset. Biopsies taken from the lesions showed non-specific inflammation, while those from the rectum and sigmoid colon showed no abnormal findings. A 5-year follow-up study was made based on radiography and endoscopy. Other inflammatory bowel diseases, such as Crohn's disease, tuberculosis, Yersinosis, Behçet's disease, and ischemic colitis were all ruled out, based on the macroscopic and microscopic findings as well as the clinical course. To our knowledge, this is the first report of right-sided ulcerative colitis that has been followed for a long period.

Adult↗