A rare case of multiple bladder hemangiomas associated with Glanzmann thrombasthenia: Successful control of refractory hematuria by super selective vesical artery embolization

Bladder hemangiomas are rare benign vascular tumors that may cause severe hematuria. We report a 66-year-old man with Glanzmann thrombasthenia who presented with life-threatening hematuria, clot retention, and severe anemia. Histopathological examination revealed multiple capillary bladder hemangiomas, while contrast-enhanced CT failed to clearly identify the lesions due to their small size. Despite intensive hematological support, including transfusions, recombinant activated factor VII, and transurethral electrocoagulation, bleeding recurred. Given the prohibitive hemorrhagic risk of repeat surgery, super selective vesical artery embolization was performed, achieving complete and durable hemostasis. No complications or recurrence occurred during six months of follow-up.