title: Thallium-201 accumulation by epidermoid inclusion cyst.
abstract: An elderly male undergoing re-evaluation for coronary artery disease demonstrated an extra-cardiac focus of 201Tl accumulation during the performance of a planar myocardial perfusion scan. This corresponded to a subcutaneous lesion of the left posterior thorax found on a concurrent computerized axial tomographic (CAT) scan and upon surgical excision proved to be an "epidermoid inclusion cyst." A follow-up nuclear scan failed to reveal any residual extracardiac tracer localization. Confusing this lesion with metastatic deposits during 201Tl neoplastic evaluations can be avoided by examination of the adjacent integument.
authors.affiliation: Radiology Service, Veterans Affairs Medical Center, Dallas, Texas.
authors.forename: R P
authors.initials: RP
authors.lastname: Bordlee
authors.forename: R W
authors.initials: RW
authors.lastname: Ware
mesh_terms: D000368:Aged; D003327:Coronary Disease / Q000000981:diagnostic imaging; D004814:Epidermal Cyst / Q000000981:diagnostic imaging*; D006321:Heart / Q000000981:diagnostic imaging; D006801:Humans; D008297:Male; D011877:Radionuclide Imaging; D013794:Thallium Radioisotopes; D013896:Thoracic Diseases / Q000000981:diagnostic imaging*; D014057:Tomography, X-Ray Computed
chemical_list: D013794:Thallium Radioisotopes