title: [Ectopic hamartomatous thymoma: a case report and review of the literature].
abstract: We report a case of a rare tumor of the head and neck: ectopic hamartomatous thymoma. The tumor involved the sus-clavicular area of a 48 year-old male. Ectopic hamartomatous thymoma exclusively occurs in the sus-scapular region. Histologically, it is characterized by the association of spindle-cell fascicles, epithelial solid or cystic structures and foci of mature adipose tIssue. Spindle cells express diffusely cytokeratins. The differential diagnosis of ectopic hamartomatous thymoma includes mixed tumor of salivary glands, biphasic synovial sarcoma and sarcomatoid carcinoma. Ectopic hamartomatous thymoma is a benign tumor which does not recur after complete excision.
authors.affiliation: Service d'Anatomie Pathologique, Institut Jules Bordet, bruxelles. nicolas.desaintaubain@skynet.be
authors.forename: Nicolas
authors.initials: N
authors.lastname: de Saint Aubain Somerhausen
authors.forename: Christine
authors.initials: C
authors.lastname: Richard
authors.forename: Dominique
authors.initials: D
authors.lastname: Priollet
authors.forename: Didier
authors.initials: D
authors.lastname: Dequanter
mesh_terms: D002828:Choristoma / Q000473:pathology*; D003937:Diagnosis, Differential; D006222:Hamartoma / Q000473:pathology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D013945:Thymoma / Q000473:pathology; D013950:Thymus Gland / Q000473:pathology*