obsolete_Retinal cavernous hemangioma true 3.41.0 Replaced with Mondo term. http://purl.obolibrary.org/obo/MONDO_0019101 UMLS:C0730304 Retinal cavernous hemangioma is a rare, benign, usually unilateral retinal vascular hamartoma that in most cases is asymptomatic but in some patients may present with blurred vision or floaters and that is characterized by the presence of grape-like vacuoles. orphanet ICD10:D18.0