Sarcoid granuloma simulating amelanotic melanoma of the iris.
A 24-year-old black man had a unilateral vascular iris tumor associated with iridocyclitis. Clinically, the iris lesion appeared similar to an amelanotic melanoma. A systemic workup, including an angiotensin-converting enzyme determination, suggested a diagnosis of sarcoidosis. A conjunctival biopsy confirmed that diagnosis.
D000328:Adult; D003937:Diagnosis, Differential; D006099:Granuloma / Q000175:diagnosis* / Q000473:pathology; D006801:Humans; D007499:Iris Diseases / Q000175:diagnosis*; D008297:Male; D008545:Melanoma / Q000175:diagnosis*; D012507:Sarcoidosis / Q000175:diagnosis* / Q000473:pathology; D014604:Uveal Neoplasms / Q000175:diagnosis*