A CASE OF LEIOMYOBLASTOMA OF SMALL INTESTINE

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  • 小腸平滑筋芽細胞腫の1例

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Abstract

A 57-year-old man was seen at the hospital because of fever, right lower abdominal pain, and anal bleeding. An operation was performed with a preoperative diagnosis of appendicitis with abscess formation or diverticulitis. Upon laparotoy, a tumor in the mesentery of the ileum about 2m and 70cm distant from the Bauhin valve was found. The tumor was 11.5×9.0×8.5cm in size, had a communication with the intestine, and was filled with hematoma. The section of the tumor was cystic, a part of the cystic wall was thickened and reddish brown in color. Histopathologically it was diagnosed as leiomyoblastoma. There has been no sign of recurrence as of 5 months after the operation and the patient is doing well.<br> A total of 51 cases of leiomyoblastoma of the small intestine have been reported in this country. A mean age was 54.3, and there were 34 men and 18 women. The maximum diameter of these tumors was 7.8cm in average. The tumors tended to be found in upper portion of the small intestine. Those patients commonly complained of anal bleeding and black stool, and more than half of them had anemia. Abdominal tumor and abdominal distention were noted in 16 cases and fever in 8 cases. In almost all cases, surgions found a great deal of difficulty in diagnosis preoperatively and eventually made it after the operation.

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