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A ten-year study of volvulus of the sigmoid colon is presented. Although the results of treatment of volvulus of the sigmoid colon are generally improving, the challenge for further improvement remains.
We report a case of sigmoid colonic carcinoma associated with deposited ova of Schistosoma japonicum. A 57-year old woman presented with a 10-mo history of left lower quadrant abdominal pain and a 2-mo history of bloody stools. She had a significant past medical history of asymptomatic schistosomiasis japonica and constipation. A colonoscopy showed an exophytic fragile neoplasm with an ulcerating surface in the sigmoid colon. During the radical operative procedure, we noted the partially encircling tumor was located in the distal sigmoid colon, and extended into the serosa. Succeeding pathological analysis demonstrated the diagnosis of sigmoid colonic ulcerative tubular adenocarcinoma, and showed deposited ova of Schistosoma japonicum in both tumor lesions and mesenteric lymph nodes. Three days after surgery the patient returned to the normal bowel function with one defecation per day. These findings reveal that deposited schistosome ova play a possible role in the carcinogenesis of colorectal cancer.
We report an unusual case of an inflammatory pseudotumor of the bladder. A biopsy specimen prior to surgical treatment suggested leiomyosarcoma, and computerized tomography and magnetic resonance imaging strongly suggested bladder tumor with sigmoid colon invasion. Accordingly, radical surgical treatment consisting of total cystectomy, anterior resection of the sigmoid colon, and ileal conduit was performed. After operation, however, histological examination revealed an inflammatory pseudotumor of bladder and sigmoid colon. These findings were confirmed by immunohistochemical staining for smooth muscle specific actin, desmin, S-100, and vimentin. Histological examination revealed a diverticulum of the sigmoid colon in the middle of the pseudotumor, and this diverticulum may have ruptured to cause the inflammatory pseudotumor of bladder and sigmoid colon.
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Colonic diverticulitis can produce gas in the portal and inferior mesenteric veins. Such an occurrence is usually associated with massive bowel necrosis and carries a grave prognosis. The authors report a case in which the patient survived.
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