title: CT features of retroperitoneal solitary fibrous tumor: report of three cases and review of the literature.
abstract: CT findings in three cases with solitary fibrous tumors (SFTs) confirmed by histopathology and immunohistochemistry were reviewed retrospectively, and compared with pathological results. The three tumors were large, well-defined, and smooth contour masses and SFT consisted of solid components of two different densities. On enhanced CT scans, tumors were strongly enhancing, the multiple vascular shadows were seen within the tumor in the arterial phase. There is progressive enhancement from the arterial to the venous phase, and the tumor capsule can be observed. Histologically, the tumors are composed of spindle cells within a background of collagen stroma, and showed a wide range of growth patterns, alternating hypercellular (tumor cell-rich) and hypocellular (collagen-rich) areas. The diagnosis is confirmed by characteristic positive immunohistochemical staining for CD34.
authors.forename: Jun
authors.initials: J
authors.lastname: Sun
authors.forename: Xiang-rong
authors.initials: XR
authors.lastname: Yu
authors.forename: Bin-bin
authors.initials: BB
authors.lastname: Shi
authors.forename: Jin
authors.initials: J
authors.lastname: Zheng
authors.affiliation: Department of Radiology, Northern Jiangsu People's Hospital, Yangzhou University, 98, Nantong West Road, Yangzhou 225001, China. drwujingtao@126.com.
authors.forename: Jing-tao
authors.initials: JT
authors.lastname: Wu
mesh_terms: D000328:Adult; D000368:Aged; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D012186:Retroperitoneal Neoplasms / Q000000981:diagnostic imaging*; D054364:Solitary Fibrous Tumors / Q000000981:diagnostic imaging*; D014057:Tomography, X-Ray Computed