Purpose To report the case of a 69-year-old male who was referred for a previously unidentified pigmented iris lesion with surrounding iris atrophy masquerading as an iris melanoma. Observations A sharply demarcated pigmented lesion extending from the trabecular meshwork to the pupillary margin was identified in the left eye. There was adjacent iris stromal atrophy. Testing was consistent with a cyst-like lesion. The patient later described a prior episode of ipsilateral herpes zoster involving the ophthalmic division of cranial nerve five. Conclusions and Importance Iris cysts present an uncommon iris tumor, often going unrecognized especially if located on the posterior iris surface. When they present acutely, as in this case where a previously unidentified cyst was revealed following zoster-induced sectoral iris atrophy, these pigmented lesions can be concerning for malignancy. Accurately identifying iris melanomas and differentiating them from benign iris lesions is imperative.
【저자키워드】 Cancer, herpes zoster, Iris atrophy, Iris melanoma, Iris nevus, Iris pigmented lesion,