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Surgical complications of the hemolytic-uremic syndrome.

Hemolytic-uremic syndrome (HUS) of childhood is a triad of acute hemolytic anemia, thrombocytopenia, and acute renal failure associated with a gastrointestinal prodrome. From 1977 to 1988, 134 patients with HUS were admitted to this institution. All patients presented with abdominal pain and diarrhea, which was virtually always bloody. Seventy-eight patients (60%) required dialysis. Five patients died (4%). One patient died as a result of colon perforation, the other four patients died of other nonsurgical complications of HUS. Three patients underwent exploratory laparotomy. One patient had a hemoperitoneum from mesenteric and transmural bleeding of the entire intraabdominal colon. Another patient had undergone surgery elsewhere for presumed intussusception with pancolitis found at exploration. Fourteen days postoperatively, he had a spontaneous perforation of the transverse colon. The third patient presented with pancolitis and perforation of the transverse colon. Despite surgical intervention he died on the sixth postoperative day. One other patient was treated conservatively for pancreatitis, which developed 3 weeks after her presentation with HUS. Complications requiring surgical intervention in HUS are rare, potentially lethal, and usually involve the colon.

Child, Preschool↗

[Long-term survival of a patient with postoperative liver metastasis of stage IVa gallbladder cancer responding to hepatic arterial infusion chemotherapy].

A 58-year-old man was diagnosed as having advanced gallbladder cancer (T4, P0, H0, N0, stage IVa) with direct invasion to the liver, transverse colon and duodenum. Therefore, extended cholecystectomy and bile duct resection with a partial resection of the transverse colon and the duodenum were performed in March 1992. Histopathological examination revealed moderately differentiated tubular adenocarcinoma of si, ly1, v1, hinf3, binf3, n0. Three years and eight months after the operation, multiple liver metastases were diagnosed by abdominal CT. Repeated hepatic arterial infusion chemotherapy with 5-FU 500 mg/body/w, MMC 4 mg/body/2w and EPI 40 mg/body/4w was performed starting in January 1996. Four months later, the lesions in the liver were reduced in size, and abdominal CT 10 months after the chemotherapy showed a partial response. However, the liver metastasis of the right lobe was enlarged on an abdominal CT in August 1997. Repeated hepatic arterial infusion chemotherapy with the same regimen was performed again starting in March 1998. Ten months later, the liver metastasis was slightly enlarged, but the greater part of the metastasis showed necrosis on an abdominal CT in January 1999. However, peritonitis carcinomatosa was observed later and the patient died 8 years after the operation.

Adenocarcinoma↗

Can barium enema indicate when colonoscopy will be difficult?

The barium enemas of 48 consecutive patients, who were technically difficult to intubate at colonoscopy, were compared to those of 46 patients who were not. Measurements were taken of colonic length and mobility, and an assessment made of diverticular disease. Rectosigmoid length (mean difficult group = 61 cm, mean control = 54 cm, P = 0.01) and total colonic length (mean difficult group = 157 cm, mean control = 140 cm, P < 0.0001) were greater in the difficult colonoscopy group as were transverse colon mobility (mean difficult group = 10 cm, mean control = 7 cm, P = 0.003) or redundancy (transverse colon reaching the true pelvis on the erect film); 65% difficult group vs 17% control group, P < 0.0001. The presence of moderate or severe diverticular disease was also greater in the difficult (23%) compared to the control (4%) group, P = 0.02. When available, assessment of a previous barium enema is a useful guide to probable technical difficulty of colonscopy. It may allow appropriate allocation of potentially difficult cases to specialist endoscopy lists.

Adolescent↗

Colonoscopy aided by magnetic 3D imaging: assessing the routine use of a stiffening sigmoid overtube to speed up the procedure.

There are not enough trained colonoscopists to cope with the present recommended number of examinations required for diagnostic and surveillance purposes. If colorectal cancer screening is to be introduced, endoscopic examination of the large bowel needs to be easier to learn and significantly quicker to carry out. The 'Bladen system', first described in 1993, is a non-radiological method of visualising the path of the endoscope, using magnetic drive coils under the patient and a chain of sensors along the biopsy channel of the instrument. In 1998, results were published using a novel computer graphics system (the RMR system), in which a much more realistic image of the endoscope could be produced using the stored positional data from the Bladen system. The RMR system has been further refined to allow, for the first time ever, accurate measurement of the effect of the passage of a colonoscope along the bowel on the lengths of different segments of the large intestine. The results obtained in 232 patients undergoing colonoscopy are analysed. In 77 of the patients, a stiffening overtube is used to splint the sigmoid colon once the endoscope is at or beyond the splenic flexure. The mean time taken to pass the colonoscope across the transverse colon is significantly shorter (p < 0.001) when an overtube is used, despite it resulting in significant lengthening of the transverse colon. The routine use of a stiffening overtube can be expected to reduce the total procedure time by between 10 and 20%.

Adult↗

Mechanical bowel obstruction due to colonic hemangioma: report of a case.

Colon hemangiomas are rare benign vascular lesions which are usually seen in teenagers. The frequent presentation is repetitive painless rectal bleeding. Colonic hemangiomas are occasionally found in the rectosigmoid area. A 62-year-old male patient was admitted to the hospital with the complaints of mechanical bowel obstruction. The radiological imaging techniques revealed a transverse colon tumor. Consequently, the patient was operated, and transverse colectomy and end-to-end anastomosis were performed. No postoperative complications occurred. The pathologic examination revealed cavernous hemangioma of the transverse colon. This report describes a very rare case of bowel obstruction due to colonic hemangioma.

Colonic Neoplasms↗

Colon injury following percutaneous endoscopic gastrostomy tube insertion.

Percutaneous endoscopic gastrostomy (PEG) is used to provide a safe route for enteral feeding. However, serious complications may occur during the procedure, such as transverse colon injuries. It can be difficult to diagnose a colon injury after the procedure in a patient with cobormidities. Herein, we present a case of transverse colon injury following insertion of a PEG tube, discuss the possible complications of PEG, and review the recent literature. This case demonstrates the importance of careful PEG tube insertion and close follow-up of the patient's clinical status after a PEG procedure.

Aged↗

Primary linitis plastica of the colon and rectum. Report of two cases.

Primary linitis plastica of the colon and rectum is an uncommon entity. Sixty-six cases have been reported in the English literature. Two new cases are reported, one of the transverse colon with widespread metastases and the other of the right colon extending from the appendix to the distal resection margin of the transverse colon. Some clinical and pathologic characteristics of the tumor are discussed, based on a review of the literature.

Adenocarcinoma, Scirrhous↗

Gastrojejunocolic fistula after gastrectomy with Billroth II reconstruction: report of a case.

We herein report the case of a 65-year old man with gastrojejunocolic fistula. The patient was admitted to our hospital because of edema of the lower limbs, diarrhea, and weight loss. His history included a distal gastric resection and Billroth II reconstruction for a duodenal ulcer 20 years previously. The laboratory data on admission revealed hypoproteinemia and hypoalbuminemia. An upper gastrointestinal X-ray series revealed a fistula between the transverse colon and upper jejunum. After improving his state of malnutrition, a partial resection of the remnant stomach, transverse colon, and jejunum, which were involved in the fistula, was performed. The postoperative course was uneventful and the patient was discharged on the 26th postoperative day. Gastrojejunocolic fistula is one of the severe complications of a stomal ulcer after a gastric resection with Billroth II reconstruction, which is considered to be induced by an inadequate resection of the stomach. As a result of the recent development of improved agents for the treatment of peptic ulcers, the occurrence of gastrojejunocolic fistula has decreased remarkably. However, gastrojejunocolic fistula should be recognized as one of the late severe complications observed after a gastrectomy with Billroth II reconstruction, since this disease may occur even 20 years after the first operation for peptic ulcer.

Aged↗

Isolated colonic hernia through the esophageal hiatus.

We report on a 75-year-old woman with an isolated colonic hernia through the esophageal hernia. The patient had suffered from cough, palpitation and dyspnea. A chest X-ray showed a colon loop gas in the mediastinum. Simultaneous barium swallow and enema showed the herniation of the only transverse colon into the mediastinum and displacement of the distal esophagus by the migrated colon. The patient underwent an open-mesh cruroplasty and a Hill's posterior gastropexy. The postoperative clinical course was uneventful. The patient has cessation of the symptoms. To our knowledge, there are only five reports presenting patients with isolated colonic hernia through the esophageal hiatus, including our case.

Aged↗

Morphologic and quantitative evaluation of the myenteric plexuses and neurons in the large colon of horses.

OBJECTIVE: To determine the number of myenteric plexuses and neurons in the large colon of clinically normal horses and whether the number was decreased in the large colon of horses with colon disease. DESIGN: Prospective study. SAMPLE POPULATION: Colon samples from 15 clinically normal horses and 31 horses with colon disease. PROCEDURE: Samples were obtained, fixed, and stained with H&E. The number of myenteric plexuses and neurons and longitudinal muscle thickness were determined in each segment of colon for clinically normal horses. Counts for segments were compared with each other and with counts in the same segment from horses with colon disease. RESULTS: Myenteric plexus and neuron densities and longitudinal muscle thickness in clinically normal horses were significantly greater in the pelvic flexure and left dorsal and transverse colons. Horses with chronic obstruction (> 24 hours' duration) or with previous obstruction had significantly lower neuron density in the pelvic flexure. Myenteric plexus density in horses with strangulating large colon torsion/volvulus was significantly less in the right ventral, right dorsal, and transverse colons, and neuron density in these horses was significantly less in all segments of colon, except the left ventral colon. Horses with colon strangulation that survived had significantly greater neuron density than horses with colon strangulation that died. Enteroglial cell numbers were increased in myenteric plexuses of horses with acute and chronic obstruction. CLINICAL IMPLICATIONS: Myenteric plexus and neuron densities can be estimated by evaluating linear counts of H&E-stained colon samples. Enteroglial cells may increase in number in response to myenteric plexus inflammation, which may affect bowel function.

Animals↗

Carcinogenesis at colonic anastomotic sites. An animal study.

For three months 65 male Sprague-Dawley rats received subcutaneous 1,2-dimethylhydrazine (DMH) weekly. Of the 65 animals, 45 were subjected to resection of the transverse colon, which subsequently was stitched to the abdominal wall. The remaining 20 animals were sham-operated controls. Fifty-four per cent of the tumors occurred either at the anastomotic site in the functioning colon (31 per cent) or at the anastomotic site of the isolated and defunctionalized colonic loop (23 per cent). On the other hand, only 10 per cent of the tumors occurred in the transverse colon of sham-operated controls. The difference was significant (P less than 0.001).

1,2-Dimethylhydrazine↗

[Empyema caused by perforation of metastatic colon cancer: a case report].

The patient was a 51-year-old female, underwent total gastrectomy for gastric cancer 6 years ago. She was admitted to a local hospital with the complaint of fever, the chest X-ray showed niveau in the left pleural cavity. Fecal material flowed out by drainage. Barium enema showed fistula of diaphragma from transverse colon. She was transferred to our hospital. Partial transverse colon resection and removal of the diaphragma fistula were performed. The colon tumor was histologically determined to be metastasis from gastric cancer with thoracic empyema.

Adenocarcinoma↗

[New developments in Crohn's disease: unravelling the mystery of its etiopathogenesis and its reinstatement as a surgically treatable condition. Part 3: The rational principles of surgical therapy].

The diagnosis of Crohn's disease makes surgery mandatory in any form of the disease, because it is ingravescent, spreads in the bowel, and is unresponsive to any type of pharmacological treatment; it invariably involves major consequences and often leads to serious complications such as perforation and cancer in the long term. The operation has to be performed promptly, because the commonest complications, such as obstruction and perforation, may occur at any stage of the disease, including the initial phase. Moreover, it is advisable to prevent the spread of the disease to the colon and jejunum, which occurs in increasing percentages of patients and is related to duration of the disease. As a rule, surgery has to take the form of a resection of the diseased bowel, which includes not only the lesions already in progress, but also those which may be expected to develop. Therefore, since the disease is segmentary, the resection, too, has to be segmentary, even when part of the diseased segment is apparently sound. Inadequate resection is often followed by dehiscence of the anastomosis and sooner or later by an inevitable recurrence. Three types of resection are performed for Crohn's disease depending on whether it manifests as ileitis, ileitis plus right colitis, or ileitis plus right and left colitis. Ileitis requires an ileocolic resection. Because the resection has to be segmentary and the proximal limit of the segment, i.e. of the lesions, cannot be determined at external examination of the intestine, the surgeon has to perform an approximate, temporary resection and examine the resected specimen, open along its entire length, before constructing the anastomosis. The borderline between the diseased and intact ileum, where convinient valves, appear with their thin, delicate outline, can be identified exactly in the mucosal surface. The resection has a "safety margin" of 10 cm. Section of the ascending colon can be performed wherever the surgeon prefers. The ileitis plus right colitis forms require resection of the ileum according to the procedure described and of the right colon, even when the lesions are confined to the caecum. Section and anastomosis must be performed in the initial tract of the transverse colon. The ileitis plus right and left colitis forms call for total colectomy in addition to resection of the ileum, even when the lesions are confined to the transverse colon. The operation is completed with an ileorectal anastomosis constructed on the lower portion of the intraperitoneal rectum (drained by the hypogastric collectors).

Crohn Disease↗

The variable stiffness colonoscope: assessment of efficacy by magnetic endoscope imaging.

BACKGROUND: Variable-stiffness colonoscopes combine the flexibility of pediatric instruments for negotiation of the sigmoid colon with the ability to stiffen the insertion tube to prevent or control looping after straightening. Previous studies have found wide variation in the efficacy of the stiffening mechanism. Thus, two studies were conducted to assess the potential benefit of the stiffening device and its optimal use. METHODS: In study 1, the effect of routinely stiffening the straightened variable-stiffness colonoscopes in the mid-descending colon was determined in 82 patients. Two insertions were performed (mid-descending colon to cecum) in each patient with and without application of the stiffening device (randomized). The time to negotiate the proximal colon (mid-descending to cecum), time to pass the variable-stiffness colonoscopes across the splenic flexure into the transverse colon, time to pass the right colon, and ancillary maneuvers used were recorded for each insertion. In study 2, consecutive patients, excluding any with previous colonic resection, were examined by using standard adult variable-stiffness colonoscopes. Real-time views of the procedure with magnetic endoscope imaging were recorded for all examinations, but procedures were randomized to be done either with (n = 88), or without (n = 87) the endoscopist viewing the magnetic endoscope imaging display. Whenever stiffening was applied, the anatomic location of the colonoscope tip and stiffness efficacy were recorded. RESULTS: In study 1, time taken to negotiate the proximal colon (p = 0.0041) and time to negotiate the splenic flexure (p = 0.006) were significantly shorter and ancillary maneuvers performed were fewer (p = 0.0014) with the stiffening device activated. In study 2, stiffening was used with similar frequency in patients examined with and without the magnetic endoscope imaging view, most commonly for passing the splenic flexure (71%), but also in the transverse colon (12%), right colon (9%), and sigmoid/descending colon (8%). Stiffening was significantly more effective when used in combination with magnetic endoscope imaging (69% with imager vs. 45% without imager; p = 0.0102). CONCLUSIONS: Overall, the variable-stiffness device used was effective in controlling looping 57% of the time. Activating maximum stiffness appears to be effective once the sigmoid colon has been negotiated and the colonoscope straightened with the tip in the proximal colon, reducing the number of ancillary maneuvers and shortening the insertion time through the proximal colon. Routine magnetic endoscope imaging further enhances the efficacy of the variable-stiffness colonoscopes by helping to identify the optimal time for stiffening.

Colon↗

[The Ogilvie syndrome. Review of literature and report of 2 cases].

Two cases of pseudo-obstruction of the colon (Ogilvie's syndrome) are presented. Increasing abdominal distension and the pain suggested surgical treatment for both patients. The operation showed in the first case a marked dilatation of the transverse colon and sigmoid, in the second the dilatation of the ascending and transverse colon, without any distal obstruction. Enterotomy was performed only in the first case, as the diameter of the colon was more then 10 cm. The authors, by review of the literature and their own experience, propose a critical revision of the syndrome, discussing the physiopathology of the rising disease.

Aged↗

Colonic dilatation due to dialysis-related amyloidosis.

A 66-year-old woman with chronic renal failure who had undergone hemodialysis for 15 years developed severe dilatation of the ascending and transverse colon. She had received right carpal tunnel release 5 years before this episode. The follow-up study of upper gastrointestinal series disclosed marked dilatation of the ascending and transverse colon with the retention of gastrografin persisted for 5 days, whereas colonic fiberscope showed no obstructive lesion. Pathologic study of biopsy specimens obtained from the colon demonstrated amyloid deposition. Avidin-biotin peroxidase complex method showed that these deposits strongly reacted with the antibody to human beta 2-microglobulin, but did not react with AA, lambda, and kappa antibodies. This case suggests that dialysis-related amyloidosis can cause intestinal pseudo-obstruction.

Aged↗

Dystrophic epidermolysis bullosa. Interesting gastro-intestinal manifestations.

Involvement of the large intestine in a long standing case of dystrophic epidermolysis bullosa was characterized by recurrent episodes of diarrhoea synchronizing with exacerbation of the skin lesions. The radiological investigations revealed two narrow segments, one each in the descending and transverse colon, with ulcer craters in the lower part of the former. The haustra from the distal half of the transverse colon to the sigmoid colon were lost.

Adult↗

Medical malpractice involving radiologic colon examinations: a review of 38 recent cases.

OBJECTIVE: Our purposes were to determine the causes of malpractice claims against radiologists performing contrast examinations of the colon and to design strategies to reduce litigation and diminish patient morbidity. MATERIALS AND METHODS: Reports of malpractice claims were collected from legal journals and databases between 1985 and 1994. For this period, 38 plaintiffs raised 52 allegations of malpractice that involved radiologists performing barium or Hypaque (meglumine diatrizoate; Winthrop Pharmaceuticals, New York, NY) colon examinations. For the 38 cases, 18 plaintiffs for decedents alleged that failure to diagnose colorectal cancer by barium enema examination caused delay in treatment and the patient's death. Eighteen plaintiffs alleged that improper performance of barium (17 cases) or meglumine diatrizoate (one case) colon examinations caused perforation of the colon, resulting in significant morbidity (15 cases) or death (three cases). Miscellaneous causes for malpractice claims were recorded in two cases. RESULTS: In 18 cases of failure to diagnose colorectal cancer, the initial radiographs were interpreted as follows: normal findings in 14 cases, diverticulosis in one case, and spastic bowel in two cases; in the remaining case, colon cancer was missed because of nonopacification of the cecum. In retrospect, 17 of 18 colorectal cancers were visualized. The delay in the diagnosis of colorectal cancer ranged from 5 to 72 months. Missed colorectal cancers occurred in the cecum (two cases), transverse colon (two cases), rectosigmoid area (nine cases), or unspecified area (five cases). In 18 cases of colon perforation, the site was the cecum (one case), transverse colon (one case), extraperitoneal rectum (seven cases), rectosigmoid area (one case), colostomy stoma (two cases), or unspecified area (six cases). One patient experienced anaphylactic shock that required hospitalization. One underwent unnecessary surgery because barium enema films showing colon cancer were mislabeled with her name. CONCLUSION: On the basis of our analyses of malpractice claims, we suggest strategies to prevent medicolegal litigation. Strategies include communicating with the patient about the type and indications of the barium enema examination, performing digital rectal examinations on all patients to detect distal rectal lesions or strictures, recognizing colon perforation, and obtaining immediate surgical consultation if colon perforation occurs. The number of missed colon cancers may be reduced by reading twice or reviewing at a later time all barium enema examinations.

Adult↗