Cavernous hemangioma is a benign vascular tumor related to single or multiple hemangiomas, probably developing from embryonic remnants of angioblastic cells. This entity is very rare and constitutes barely 0.6% of bladder tumors. However its diagnosis can be easily established by cystoscopy and confirmed by pathological examination. Hematuria is the most common mode of manifestation. Bladder hemangioma is most often sporadic, but it can be associated with a KlippelTrenaunay syndrom, in this case they are multiple. Treatment consists of tumor resection. Selective arterial embolisation is rarely used. Endoscopic treatment by photocoagulation Neodymium laser seems a satisfactory therapeutic option.