title: Calcifying fibrous pseudotumor of the pleura.
abstract: Calcifying fibrous pseudotumor is an uncommon benign lesion that has unique histologic features. We report a case of calcifying fibrous pseudotumor of the pleura occurring in a 31-year-old woman. A computed tomographic scan revealed a pleural mass in the right anterior costophrenic angle. The excised mass was well circumscribed, nonencapsulated, solid, and firm. The tumor showed dense hyalinized collagenous tissue interspersed with spindle cells, psammomatous calcifications, and a predominantly lymphoplasmocytic infiltrate. Most spindle cells were diffusely positive for vimentin, focally positive for CD34, and negative for desmins, smooth muscle actin, S-100 protein, and anaplastic lymphoma kinase-1.
authors.affiliation: Department of Pathology, College of Medicine, Hanyang University, Seoul, South Korea.
authors.forename: Ki Seok
authors.initials: KS
authors.lastname: Jang
authors.forename: Young-Ha
authors.initials: YH
authors.lastname: Oh
authors.forename: Hong Xiu
authors.initials: HX
authors.lastname: Han
authors.forename: Soon-Ho
authors.initials: SH
authors.lastname: Chon
authors.forename: Won Sang
authors.initials: WS
authors.lastname: Chung
authors.forename: Chan Kum
authors.initials: CK
authors.lastname: Park
authors.forename: Seung Sam
authors.initials: SS
authors.lastname: Paik
mesh_terms: D000328:Adult; D002114:Calcinosis / Q000000981:diagnostic imaging* / Q000473:pathology; D005260:Female; D005355:Fibrosis / Q000000981:diagnostic imaging; D006801:Humans; D010994:Pleura / Q000000981:diagnostic imaging / Q000473:pathology; D010997:Pleural Neoplasms / Q000000981:diagnostic imaging* / Q000473:pathology; D011859:Radiography; D012983:Soft Tissue Neoplasms / Q000000981:diagnostic imaging* / Q000473:pathology