Interventional Embolization Combined With Stent Placement in the Treatment of Cerebellar Arteriovenous Malformation Complicated by Ruptured Aneurysm.

Cerebellar arteriovenous malformation complicated by an aneurysm is a critical cerebrovascular disease. Rupture of the aneurysm can lead to severe subarachnoid hemorrhage, with a high mortality and disability rate. This case report describes a 66-year-old male patient who presented with an acute onset of symptoms, including slow response, aphasia, and projectile vomiting. Physical examination upon admission indicated neurological deficits. Computed tomography revealed subarachnoid hemorrhage and cerebral edema. Digital subtraction angiography confirmed the diagnosis of a right cerebellar vascular malformation complicated by rupture of an aneurysm in the anterior inferior cerebellar artery. The patient underwent emergency endovascular treatment, including aneurysm coiling and stent placement. Postoperatively, the patient's neurological function recovered rapidly, with no residual deficits. This case highlights the need to be highly vigilant regarding the possibility of vascular malformations complicated by aneurysms in patients with spontaneous subarachnoid hemorrhage, and demonstrates the effectiveness and safety of emergency endovascular intervention in such critically ill patients.