title: Juxtaoral organ of Chievitz presenting clinically as a tumour.
abstract: An extremely rare hamartomatous lesion of the juxtaoral organ of Chievitz (JOOC) in a 63 year old man is reported. The tumour appeared as a large mass in the infratemporal fossa with associated mandibular bone resorption; histologically, it was well encapsulated and composed of numerous tangled masses of benign squamous epithelial nests and mature fibrofatty tissue. There were no histological features suggestive of neoplastic transformation. A literature survey confirmed that this is the first adult case of JOOC presenting clinically as an extraoral tumour.
mesh_terms: D015415:Biomarkers / Q000032:analysis; D002610:Cheek; D006222:Hamartoma / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D006258:Head and Neck Neoplasms / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D006801:Humans; D007150:Immunohistochemistry; D007633:Keratins / Q000032:analysis; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D014057:Tomography, X-Ray Computed
chemical_list: D015415:Biomarkers; D007633:Keratins