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Vesicoileal fistula develops in less than 10% of all vesicointestinal fistulas. The causative disorders were recorded as regional enteritis, bladder tumor, trauma, ileal tuberculosis and complication of radiation therapy of cervical carcinoma, but the literatures recording vesicoileal fistula caused by malignant lymphoma are surpassingly few. We report a case of vesicoileal fistula originated primarily from malignant lymphoma in a 74 years old man who was seen with the chief complaints of pneumaturia and fecaluria. The diagnostic procedures such as IVP, cystography, gastrointestinal series, barium enema and rectosigmoidoscopy were performed and the vesicoileal fistula was suspected. The diagnosis was confirmed by operation and histologic examination. The operation consisted of one stage resection of the ileal lymphoma and adhered sigmoid colon, end to end anastomosis of ileum, end to end anastomosis of sigmoid colon and partial cystectomy. The patient underwent anticancer chemotherapy and was discharged at the postop. third week.
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