[Carcinoma of Bellini's ducts: apropos of a case]. / Carcinoma de ductos de Bellini: A propósito de un caso.

OBJECTIVE: To report an additional case of collecting duct carcinoma of the kidney, known as carcinoma of Bellini. METHODS/RESULTS: A 65-year-old male patient was admitted for left renal pain. An ultrasound scan showed a solid right renal mass. The patient underwent extended radical nephrectomy. Pathological analysis of the surgical specimen disclosed carcinoma of Bellini. The patient is asymptomatic 18 months postoperatively. CONCLUSIONS: Carcinoma of Bellini is an uncommon tumor type arising from the collecting duct cells and accounts for 0.5%-2% of all renal tumors.

[Low digestive hemorrhage caused by amebic colitis]. / Hemorragia digestiva baja por colitis amebiana.

Amebiasis is an infectious disease produced by Entamoeba histolytica, which has invasion capacity of the colon mucosa. It has different clinical forms, varying from the asymptomatic carrier state to severe, although not frequent, fulminant or necrotizing colitis, with an important necrosis of the colon mucosa. Perforation or intestinal bleeding are possible. We report one case of patient who had a history of recent travel to India. Was admitted with a clinical picture of abdominal pain, diarrhea and fever. Initially he received treatment with Metronidazole and steroids, because of doubts in the endoscopy diagnosis of Crohn's Disease versus Amebic Colitis. The patient developed a fulminant colitis, that required emergency surgery because of lower intestinal massive bleeding. During the operation perforations of the caecum and rectum were found. We performed a total colectomy with ileostomy and closing of the stump rectal. Six months later a second operation was made for the reconstruction of the intestinal continuity by an ileal pouch and rectal anastomosis.