Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: UMLS:C0021843 (bowel obstruction)
 9,927 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

PURPOSE: Lanreotide, a long-acting somatostatin analogue, inhibits intestinal, bile and pancreatic secretions and decreases intestinal motility. The purpose of this experimental study was to evaluate the effects of lanreotide on the healing of intestinal anastomoses following small bowel obstruction. METHODS: Two groups of 16 Wistar rats (average weight 310 g) were used. Basal diameters of ileus were measured prior to the ligation of the bowel, 15 cm from the ileocecal valve. Luminal fluid was also withdrawn proximal to the obstructed bowel for sodium and potassium analysis. Lanreotide was administered intramuscularly in a single dose (5.4 mg/kg) in the first group, while the same volume of saline was used in the control group. 48 h later rats were re-operated upon. Diameters of the obstructed segments were measured, and luminal fluid of the obstructed bowel was withdrawn and sodium and potassium levels were measured. A segment of 1 cm of the obstructed bowel was resected and end-to-end intestinal anastomosis was performed. Rats were sacrificed on day 7 following the second operation. Anastomoses were examined macroscopically and resected including a 2.5 cm of small bowel on either side. Bursting pressures were measured and the specimens were send for histological examination. RESULTS: The diameter of obstructed bowel increased significantly in both groups. The increase was more prominent in the control group (P < 0.001). Total luminal electrolyte contents for sodium and potassium were stastistically higher in the control group compared to the lanreotide group (P < 0.001). Adhesion formation was more extensive in the control group. Bursting pressures were significantly higher in the lanreotide group compared to the control group (P=0.003). Histological examination of anastomoses showed a more profound inflammatory reaction in the control group compared to the lanreotide group while microscopical healing of the anastomoses was almost the same in both groups. CONCLUSIONS: Lanreotide administration in rats with small bowel obstruction decreases significantly distension and electrolyte losses and seems to improve strength of small bowel anastomoses.
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PMID:Effects of lanreotide on the healing of small bowel anastomoses following obstructive ileus in rats. 1278 Jun 50

Metastatic breast cancer involving the hepatobiliary tract or ascites secondary to peritoneal carcinomatosis has been well described. Luminal gastrointestinal tract involvement is less common and recognition of the range of possible presentations is important for early and accurate diagnosis and treatment. We report 6 patients with a variety of presentations of metastatic breast cancer of the luminal gastrointestinal tract. These include oropharyngeal and esophageal involvement presenting as dysphagia with one case of pseudoachalasia, a linitis plastica-like picture with gastric narrowing and thickened folds, small bowel obstruction and multiple strictures mimicking Crohn's disease, and a colonic neoplasm presenting with obstruction. Lobular carcinoma, representing only 10% of breast cancers is more likely to metastasize to the gastrointestinal tract. These patients presented with gastrointestinal manifestations after an average of 9.5 years and as long as 20 years from initial diagnosis of breast cancer. Given the increased survival of breast cancer patients with current therapeutic regimes, more unusual presentations of metastatic disease, including involvement of the gastrointestinal tract can be anticipated.
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PMID:Metastatic breast cancer to the gastrointestinal tract: a case series and review of the literature. 1703

Breast carcinoma continues to be the most common neoplasm in women, with a lifetime risk affecting approximately 1 in 8. Factors affecting prognosis include the size and grade of the primary lesion, regional axillary lymphadenopathy, the presence of hormonal receptors, and distant metastatic disease. Although metastatic breast disease usually affects the lungs, bones, and brain, abdominal association is not as common. Interestingly, lobular carcinoma, a subtype that only accounts for a minor portion of breast cancers, usually has luminal gastro-intestinal involvement. We describe a 57-year old Caucasian female with recurrent episodes of abdominal pain and concurrent intermittent obstructive symptomatology with overflow diarrhea over a one-year period. Conventional endoscopic and imaging workup was unrevealing. Capsule endoscopy was used, but this caused a complete bowel obstruction necessitating surgery, and subsequent resection of a strictured segment. Pathological examination yielded metastatic adenocarcinoma, consistent with origin in breast, lobular type. Immunohistochemistry confirmed the origin. Luminal gastro-intestinal involvement is a rare, yet recognized, site of breast adenocarcinoma metastasis; it is even more uncommon with an undiagnosed primary. It may mimic other gastro-intestinal disease, and as such, it would be prudent to maintain a modest index of suspicion given the high prevalence of breast neoplasia.
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PMID:Small bowel obstruction as the primary presentation of undiagnosed metastatic lobular breast carcinoma. 2196 4

Intestinal lipomatosis is rare and often asymptomatic but can present with intestinal obstruction. Occasionally, metastatic breast cancer is identified in the ovary before a breast primary is discovered. We report the case of a 50-year-old woman diagnosed with synchronous intestinal obstruction due to lipomatosis, and incidental ovarian metastases from breast cancer. The patient presented with a 12-day history of nausea, diffuse abdominal pain, and constipation. An abdominal x-ray showed air-fluid levels, and computed tomography documented small bowel distention. An explorative laparotomy was performed, which revealed small bowel distention, an obstructive lesion of the ileocecal valve, three terminal ileum lesions, ascites, and heterogeneous ovaries. Right ileocolic resection and left oophorectomy were performed. The pathological diagnosis revealed lipomatous submucosal lesion of the ileocecal valve and ileum, and 17 lymph nodes, which were all negative for malignant cells. The oophorectomy revealed ovarian metastasis from breast carcinoma. Ascitic fluid was positive for malignant cells. Mammography and breast/axillary ultrasonography showed a solid nodule of the left breast, ductal carcinoma, and multiple enlarged left axillary lymph nodes, which were positive for neoplastic cells. Immunohistochemical evaluation showed hormonal receptor positivity and C-erb2 negativity. Breast magnetic resonance imaging showed a 14 mm left nodule and a positron emission tomography scan revealed 18F-FDG uptake in the left breast, left axillary lymph nodes, right ovary, and peritoneum. The tumor was staged as stage IV ductal breast carcinoma, cT1N1M1, Grade 2, Luminal B-like. The multidisciplinary oncological meeting proposed chemotherapy, and a re-staging breast MRI after chemotherapy, which showed a complete response. The patient started treatment with letrozole and remains disease-free 22 months after finishing chemotherapy.
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PMID:Incidental diagnosis of breast cancer in the pursuit of the treatment of intestinal obstruction. 3086 37

Malignancies of gastro-intestinal tract cause stricture formation that leads to intestinal obstruction. In such cases, either surgery or placement of self-expanding metallic stents (SEMS) are options of palliation. For left sided colorectal obstruction, SEMS have been widely used and reported. Luminal stenting is not always an easy task to perform because of altered anatomy of the surrounding structures, specially in the right side of colon and terminal ileum. SEMS placement, particularly in the ileocecal region, is technically difficult. Few studies on SEMS deployment in right sided colon have been reported till now. We report a case of metastatic signet ring cell carcinoma of rectosigmoid junction with malignant terminal ileal stricture palliation done with placement of SEMS.
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PMID:Self-expanding Metallic Stent Placement in Malignant Terminal Ileal Stricture. 3177 52