A CASE OF SCHWANNOMA OF THE INTRAPELVIC RETROPERITONEUM

A 29-year-old woman was referred to the department because of an intrapelvic tumor which was found during close examinations for possible gynecological diseases. She was strictly followed up on an ambulant basis, but an increasing tendency in size of the tumor was observed and the patient was admitted for operation. Upon laparotomy, the tumor which was entirely covered with retroperitoneum existed in the median presacral region, and there was no infiltration into the sacrum. The extirpated tumor was 8.0×7.1×6.5cm in size, and the section was slightly yellowish white in color and elastic soft. Histopathologically it was benign schwannoma where spindle cells in fascicular or interlacing arrangement were seen, and was positive for S-100 protein. The postoperative course was uneventful. There has been no sign of recurrence as of 9 months after the operation.