Abstract
We report a case of villous tumor of the rectum with electrolyte depletion syndrome. The patient was a 72-year-old man who complained of diarrhea and vomiting, and was transferred to our institution from a nearby hospital for examination and therapy. On laboratory data at admission, renal dysfunction and dehydration (BUN 80.9mg/dl, Cr 2.6mg/dl, Na 121mEq/l, Cl 87mEq/dl, K 2.1mEq/dl) were found. A colonoscopy revealed a villous tumor with mucus in the rectum and pathological examination of the biopsy specimen revealed well differentiated adenocarcinoma in the villous tumor. After admission, renal dysfunction and electrolyte depletion were improved by saline containing potassium chloride, so we performed abdomino-perineal resection. In the resected specimen, the size of the tumor was 8×14cm, and the histopathological diagnosis was an adenocarcinoma invading mucosa in the tubulo-villous adenoma. After the operation, there have been no recurrences of the dehydration and electrolyte depletion.
