Malignant uveal melanomas are the most common primary intraocular malignant
tumors in adults. Choroidal hemangiomas are congenital, benign, vascular l
esions that may be confused with malignant uveal melanomas on clinical exam
ination. The MR imaging characteristics of uveal melanomas and choroidal he
mangiomas are different, making diagnostic differentiation possible with a
high degree of accuracy. This article describes the MR imaging features of
uveal melanoma, choroidal hemangioma, and other simulating lesions.