title: [Varicose vein of the iris].
abstract: A 56-year-old man presented with a pigmented iris nodule which showed prominent vessels and enlargement within 6 weeks. The tumour caused recurrent hyphemata. Differential diagnosis included a pigmented iris hemangioma and a malignant melanoma. A sectoriridectomy was performed. Histology revealed a stromal cavity filled with fibrin and abundant erythrocytes. A diagnosis of an iris varix was established. However, it has to be pointed out that the distinction between a varix of the iris and an iris hemangioma may be difficult not only clinically but also histologically, and that iris melanomas may produce hemangioma-like patterns.
mesh_terms: D003937:Diagnosis, Differential; D006801:Humans; D007498:Iris / Q000098:blood supply* / Q000473:pathology / Q000601:surgery; D008297:Male; D008875:Middle Aged; D014648:Varicose Veins / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery
vernacular_title: Varixknoten der Iris.