title: Solitary fibrous tumor with pseudo-lipoblasts involving the sublingual gland: report of a case and review of the literature.
abstract: Solitary fibrous tumors (SFTs) are mesenchymal neoplasms uncommonly occurring in the salivary glands. In rare instances, SFTs can contain mature fat, atrophic fat, or vacuolated cells previously termed 'pseudo-lipoblasts', which may be misinterpreted as a feature of malignancy. We report an unusual tumor with pseudo-lipoblasts occurring in the sublingual gland. The tumor exhibited a prominent hemangiopericytic pattern, bland cytology, and immunohistochemical and morphologic features consistent with that of an SFT. A review of 15 cases of SFTs of the salivary glands is presented. Emphasis is laid upon the histologic differential diagnosis and the clinical features of these tumors.
authors.affiliation: Department of Otolaryngology, Head & Neck Surgery, Centre Hospitalier de l'Université de Montréal, Montreal, QC, Canada. tareckayad@yahoo.ca
authors.forename: Tareck
authors.initials: T
authors.lastname: Ayad
authors.forename: Julien
authors.initials: J
authors.lastname: Ghannoum
mesh_terms: D000368:Aged; D005260:Female; D006393:Hemangiopericytoma / Q000000981:diagnostic imaging / Q000473:pathology* / Q000601:surgery; D006801:Humans; D054364:Solitary Fibrous Tumors / Q000000981:diagnostic imaging / Q000473:pathology* / Q000601:surgery; D013361:Sublingual Gland / Q000000981:diagnostic imaging / Q000473:pathology* / Q000601:surgery; D013362:Sublingual Gland Neoplasms / Q000000981:diagnostic imaging / Q000473:pathology* / Q000601:surgery; D014057:Tomography, X-Ray Computed