左大腿後面,左鎖骨下,右腎周囲組織と異時性異所性に発生した脂肪肉腫の1例

Abstract

46歳女.2年前に左鎖骨下の脂肪肉腫, その10年前には左大腿部の脂肪肉腫により腫瘍摘出術の既往があった.今回, 右腎腫瘍を指摘され精査加療目的で入院した.腹部CT, MRI, 血管造影で腎脂肪肉腫又は腎血管筋脂肪腫と診断し, 経胸腹式右腎摘除術を施行した.病理診断はミキソイド型の脂肪肉腫であった.術後経過は良好で, 再発予防のための補助化学療法は行わなかったが, 4ヵ月後も, 転移や再発を認めなかった

A 46-year-old woman had received surgery to remove a mass arising from the back of the left thigh 13 years before and on the left subclavicular region 3 years before. Histological diagnosis of both masses was myxoid type liposarcoma. She was admitted to our hospital because of right abdominal pain. Abdominal computed tomography (CT) and magnetic resonance imaging (MRI) revealed the presence of a large retroperitoneal tumor. The removed specimen weighed 1, 450 g and measured 24 x 13 x 9 cm in size. Histological diagnosis was myxoid type liposarcoma. She has been free of any recurrence for 4 months postoperatively without adjuvant therapy.