title: False diagnosis of orbital apex tumor by CAT scan in thyroid eye disease.
abstract: Computerized transaxial tomography is now the procedure of choice in diagnosing exophthalmos. Caution must be exercised, however, in interpreting the results. The patient reported here had a swollen inferior rectus muscle that simulated an orbital apex tumor on CAT scan.
mesh_terms: D000328:Adult; D003951:Diagnostic Errors; D005133:Eye Movements; D006111:Graves Disease / Q000097:blood / Q000000981:diagnostic imaging*; D006801:Humans; D008297:Male; D009918:Orbital Neoplasms / Q000000981:diagnostic imaging*; D013972:Thyrotropin / Q000097:blood; D014057:Tomography, X-Ray Computed
chemical_list: D013972:Thyrotropin