title: [A case of retroperitoneal well-differentiated liposarcoma with metaplastic bone formation].
abstract: A 43-year-old female was referred to our hospital from a local doctor. Her chief complaints were weight gain and abdominal fullness. Computed tomography and magnetic resonance imaging showed a huge tumor in the right retroperitoneal space, which adhered to the right kidney. It was resected with concomitant resection of the right kidney. It measured 30×15 cm and weighed 3.0 kg. Histological examination revealed well differentiated liposarcoma with metaplastic bone formation. She has survived 22 months since the operation with no evidence of recurrence. A retoroperitoneal liposarcoma with metaplastic bone formation is rare. Twenty cases have been reported in Japan including our case.
authors.affiliation: The Department of Urology, Ijinkai Takeda General Hospital.
authors.forename: Ryuichiro
authors.initials: R
authors.lastname: Arakaki
authors.forename: Takeshi
authors.initials: T
authors.lastname: Yoshikawa
authors.forename: Hitoshi
authors.initials: H
authors.lastname: Yamada
authors.forename: Toshiyuki
authors.initials: T
authors.lastname: Kamoto
authors.forename: Yoshiki
authors.initials: Y
authors.lastname: Mikami
mesh_terms: D000328:Adult; D001842:Bone and Bones / Q000473:pathology*; D005260:Female; D006801:Humans; D008080:Liposarcoma / Q000473:pathology*; D008679:Metaplasia; D012186:Retroperitoneal Neoplasms / Q000473:pathology*