title: Unicentric Castleman's disease with leiomyosarcoma: a rare association.
abstract: A 54-year-old asymptomatic woman was first diagnosed with unicentric Castleman's disease at 51 years of age. The disease was identified incidentally behind the inferior vena cava after a computed tomography (CT) scan. She was followed conservatively and no enlargement of the mass was observed. However, a follow-up CT scan revealed another solid mass in the left retroperitoneal area. Both tumors were surgically removed in the same session. The retrocaval mass was histologically confirmed to be Castleman's disease of the hyaline vascular type. Histological examination of the left peritoneal mass revealed low-grade leiomyosarcoma. We present here a case of leiomyosarcoma associated with unicentric Castleman's disease, both of which were localized in the retroperitoneum.
authors: Department of Urology, Nagasaki University School of Medicine, Sakamoto, Nagasaki City, Nagasaki, Japan.
authors: Kousuke
authors: K
authors: Takehara
authors: Hideki
authors: H
authors: Sakai
authors: Tsukasa
authors: T
authors: Igawa
authors: Toshifumi
authors: T
authors: Tsurusaki
authors: Tomayoshi
authors: T
authors: Hayashi
authors: Hiroshi
authors: H
authors: Kanetake
mesh_terms: D005871:Castleman Disease / Q000150:complications* / Q000175:diagnosis / Q000601:surgery; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007890:Leiomyosarcoma / Q000150:complications* / Q000175:diagnosis / Q000601:surgery; D008875:Middle Aged; D012186:Retroperitoneal Neoplasms / Q000150:complications* / Q000175:diagnosis / Q000601:surgery; D016896:Treatment Outcome