Epithelioid cell nevus of the iris.

A 21-year-old woman had a progressively enlarging pigmented tumor of the iris and anterior chamber angle in the right eye. Because the lesion was suspected to be a malignant melanoma, it was removed by an iridocyclectomy. Histopathologic examination disclosed the tumor to be a benign epithelioid cell nevus. This article describes the clinical and pathologic features of this rare iris tumor.