[A varix of the vortex vein ampulla is a rare differential diagnosis of malignant melanoma of the choroid].

Melanoma of the choroid is the most frequent primary intra-ocular malignancy whereas a varix of the vortex vein ampulla is a benign, rare and asymptomatic condition requiring no treatment. A varix of the vortex vein ampulla is usually found accidentally and can easily be mistaken for a choroidal melanoma, a naevus or a haemorrhage. We present a case of a varix of the vortex vein ampulla, which can be distinguished from other more serious conditions by using simple clinical methods.