[Retrospective diagnosis of stromal tumor with liver and nodal metastasis in a hemorrhagic Meckel's diverticulum appearing 8 years after the first resection]. / Diagnostic rétrospectif de tumeur stromale d'un diverticule de Meckel révélée par une hémorragie devant une récidive péritonéale métastatique survenant 8 ans après la résection initiale.

Meckel's diverticulum is the most prevalent congenital abnormality of the gastrointestinal tract (0.3-4%). The gastrointestinal stromal tumours (GIST) are rare tumours. Only few cases of GIST developed in Meckel's diverticulum have been published in the literature. We reported a case of a woman with a diagnosis of GIST of Meckel's diverticulum retrospectively made 8 years after the resection of an haemorrhagic Meckel's diverticulum, whom she developed a large size intra-abdominal tumour with liver and nodes metastasis.

[Single filiform polyp revealed by severe haemorrhage in a patient with normal colon. Report of a case and review of the literature]. / Polype filiforme unique développé dans un côlon normal et révélé par une hémorragie digestive sévère. A propos d'un cas et revue de la littérature.

Filiform polyposis or giant inflammatory polyp is an uncommon benign lesion that has principally been reported in patients with evidence of inflammatory bowel disease, Crohn's disease or ulcerative colitis. It appears to be a sequella of diffuse mucosal inflammation. More rarely, PF found in association with colonic non specific inflammation. PF has rarely been reported in patients without previous colonic disease. We report the case of a 60-year-old woman without history of colonic disease who presented a PF revealed by hematochesia.

[Tropical sprue: two cases in the Paris area]. / Sprue tropicale: à propos de 2 cas observés dans la région parisienne.

Tropical sprue (TS) is a postinfective tropical malabsorption that occurs in tropical countries. TS is associated with a persisting colonization of the small-intestine lumen by enterotoxinogenic bacteria that cause subsequent enterocyte damage affecting all or part of the small-intestine. We report two cases of TS that occurred in inhabitants of Paris area returned from endemic areas. The first observation concerned a 76-year old woman admitted for anorexia, loss of 20 kg and anemia. The second observation concerned a 53-year old man referred for chronic diarrhea and loss of 40 kg within 4 years. In both cases, duodenal lesions consisted of subtotal and total villous atrophy with prominent infiltration of the damaged surface epithelium with lymphocytes and infiltrate of lymphocytes and plasma cells of the lamina propria. The two patients recovered under antibiotics, confirming the diagnosis of TS.

[Sarcomatoid carcinoma of the colon: report of a case and review of the literature]. / Carcinome sarcomatoïde du côlon: présentation d'un cas et revue de la littérature.

Sarcomatoid carcinomas or carcinosarcoma are rare tumors composed of mixed carcinoma cells and mesenchymal cells. Thirteen cases with colorectal involvement have been published to date. We report a case of sarcomatoid carcinoma of the colon in a 67-Year-old woman hospitalized with a history of anemia and bloody stools. The patient underwent a left hemicolectomy. Immunohistochemistry revealed two cell components (undifferentiated carcinomatous and sarcomatous components). The patient died of her tumor 2 Months after the operation. Our review of the literature stresses the poor prognosis associated with colonic sarcomatoid carcinoma.

[Acute cytomegalovirus (CMV) recto-colitis mimicking rectal carcinoma without apparent cause of immunodeficiency]. / Rectite aiguë pseudo-tumorale à cytomégalovirus (CMV) chez l'adulte sans cause apparente d'immunodépression.

Cytomegalovirus (CMV) infection of the gastrointestinal tract occurs mainly in immunosuppressed patients. We report here the case of a 76-Year-old woman, without obvious cause of immunosuppression, who developed severe proctitis. The clinical course was favourable with ganciclovir therapy. In the absence of controlled data in the field of CMV intestinal infections in immunocompetents, we discuss the potential benefit of an antiviral therapy in those patients who do not recover rapidly and spontaneously.

[Isolated ileal villous atrophy: a rare cause of chronic diarrhea. Report of a case and review of the literature]. / Atrophie villositaire iléale isolée primitive: une cause rare de diarrhée chronique. Présentation d'un cas et revue de la littérature.

Villous atrophy of the terminal ileum is usually secondary to celiac disease or other diseases. Very few cases of primary ileal villous atrophy have been reported in the literature. We report here the case of a 37-year-old man with chronic diarrhea since childhood without features of malabsorption. The macroscopic and microscopic appearance of the duodenal, ileal and colonic mucosae at endoscopy and contrast radiography of the small bowel was normal. Ileal lesions consisted of total villous atrophy. Search for antinuclear antibodies, anti-endomysium and anti-gliadin IgA and IgG and HIV serology were negative. Serum immunoglobulin level was normal. Diarrhea resolved under treatment with colestyramine.

[Regression of hepatocellular carcinoma under Tamoxifen: report of one case and review of the literature]. / Carcinome hépatocellulaire régressant sous traitement par tamoxifène.

Hepatocellular carcinoma is a malignant tumor with a poor prognosis, particularly when it is unresectable. The results of tamoxifen treatment in hepatocellular carcinoma have been disappointing and randomized studies have shown conflicting results. We report the case of a 72-yr-old-man with histologically confirmed hepatocellular carcinoma on a normal liver, that regressed with tamoxifen treatment. Regression was confirmed by normalization of serum alpha-fetoprotein levels and a significant decrease in radiological lesions by 66%. The patient was alive in excellent clinical condition more than 30 months after the initial diagnosis.