CASE REPORT   

Chirurgia 2018 October;31(5):208-11

DOI: 10.23736/S0394-9508.18.04716-2

Copyright © 2018 EDIZIONI MINERVA MEDICA

language: English

A rare case of solitary fibrous tumor of the mesorectum

Kengo HAYASHI ¹ ✉, Masanori KOTAKE ¹, Hiroki TAWARA ¹, Kaichiro KARO ¹, Koichiro SAWADA ¹, Masahiro OSHIMA ¹, Masahiro HADA ¹, Yosuke KATO ¹, Kaeko OYAMA ¹, Kazuhiro NOMOTO ², Takuo HARA ¹

¹ Department of Surgery, Kouseiren Takaoka Hospital, Takaoka, Japan; ² Department of Pathology, Kouseiren Takaoka Hospital, Takaoka, Japan

Solitary fibrous tumor (SFT) is a rare mesenchymal tumor, which commonly arises from the thoracic pleura. In this report, we describe a rare case of SFT arising from the mesorectum that was successfully resected under laparoscopy, with a summary and review of reported cases. Our case was a 55-year-old female presenting with lower abdominal discomfort with no bowel symptoms. Computed tomography and magnetic resonance imaging showed a pararectal tumor 2.3 cm in diameter, but no preoperative definite diagnosis could be obtained. uring follow-up the tumor size was increased slightly, so we performed en bloc tumor resection with rectum laparoscopically. Histopathologically the tumor demonstrated a patternless architecture of spindle cells and there were no findings of continuity between the tumor and the rectum. According to the immunohistochemical examination, the tumor was diagnosed as SFT. Postoperative course was good and there was no evidence of recurrence 1 year after surgery. SFT is a usually benign tumor with slow growth, but some of the tumors are reported as malignant, and complete surgical resection is the only curative treatment. We performed complete tumor resection, but there are reports about late recurrence after surgical excision, so we are planning to continue careful follow-up.

KEY WORDS: Solitary fibrous tumors - Mesentery - Laparoscopy