後腹膜脂肪肉腫の1例

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66歳男性.患者は胆石を精査中,腹部CTにて肝下面から右腎下方の脂肪性腫瘤を発見され,著者らの施設へ紹介入院となった.入院時,自覚症状は認めず,腹部CTおよびMRIにて後腹膜脂肪腫が疑われ,右腎・副腎を含む経腰的腫瘍摘出術を施行した.その結果,摘出標本は20×14×8cmで,病理組織学的に高分化型脂肪肉腫と診断された.術後,経過は良好で,術後12ヵ月経過現在,再発はみられていないWe report a case of retroperitoneal liposarcoma. A 66-year-old male was referred to our hospital for a retroperitoneal tumor that was detected during gallbladder stone examination. Computed tomography (CT) and magnetic resonance imaging (MRI) revealed an extrarenal lipomatous tumor, 20 x 14 x 8 cm in size, in the right retroperitoneal space. He underwent surgical excision of the tumor with concomitant resection of the right kidney and adrenal gland. The resected tissue weighed 730 g. Histological examination revealed a well differentiated liposarcoma. He received no adjuvant therapy.