title: Primary solitary fibrous tumor of the thyroid - report of a case and review of the literature.
abstract: Solitary fibrous tumor (SFT) is a rare spindle-cell neoplasm, especially in the thyroid. We report a case of primary solitary fibrous tumor of the thyroid gland in a 37 year-old Chinese man. The tumor was characterized by bland-looking spindle cells admixed with thin and thick collagen fibers. On immunohistochemistry study indicated that tumor cells were diffusely positive for CD34, Bcl-2 and CD99, and negative for Desmin, NSE, SMA, S-100, and CD68. The patient remains well 16 months after excision. The morphologic and immunohistochemical features of the thyroid SFTs are similar to their reported counterparts in other anatomic sites.
authors.affiliation: 1. Department of Pathology, the Chinese PLA General Hospital, Beijing, 100853, China.
authors.forename: Zhigang
authors.initials: Z
authors.lastname: Song
authors.forename: Chunkai
authors.initials: C
authors.lastname: Yu
authors.forename: Xin
authors.initials: X
authors.lastname: Song
authors.forename: Lixin
authors.initials: L
authors.lastname: Wei
authors.forename: Aijun
authors.initials: A
authors.lastname: Liu