Developmental retinal vascular malformation Retinal cavernous hemangioma 2012-04-06T04:12:54Z HP:0030508 Retinal cavernous angioma HP:0011513 A benign tumor of the retina that appears as a grouping of blood-filled saccules within the inner retinal layers or on the surface of the optic disc. Retinal cavernous hemangioma are described as having a 'cluster of grapes' appearance. SNOMEDCT_US:312937006 UMLS:C0730304 The lesions are variable in size and location, and frequently follow the course of a major retinal vein. Epiretinal membranes are a common feature. In contrast to retinal capillary hemangiomas, cavernous hemangiomas lack prominent feeder vessels, intraretinal exudate, and surrounding subretinal fluid. Because the fundoscopic features are characteristic, diagnosis can generally be made based upon clinical appearance. These hemangiomas can be associated with cavernous brain hemangiomas. The use of "Retinal cavernous angioma" is not recommended, as strictly speaking only hemangiomas occur in the retina. Retinal cavernous haemangioma