Hypointensity of draining veins on susceptibility-weighted magnetic resonance images might indicate normal venous flow and a lower risk of intracerebral hemorrhage in patients with intracranial arteriovenous shunt(s).

Patients with intracranial arteriovenous shunt(s) have a risk of intracerebral hemorrhage (ICH). We investigated the signal intensity of draining veins on susceptibility-weighted imaging (SWI) and the status of venous drainage shown by digital subtraction angiography (DSA). We then evaluated whether the signal intensity of draining veins on SWI is related to normal venous flow (NVF) and/or ICH.

Rare Case of Floating Intimal Flap Associated with Atheromatous Carotid Plaque.

Background: A mobile carotid plaque can be detected by duplex ultrasonography and is a high-risk factor for embolic stroke.

Case Description: We herein present a case involving an 80-year-old man with an asymptomatic carotid floating flap diagnosed by duplex ultrasonography and treated with carotid endarterectomy. Intraoperatively, an ulceration was found immediately proximal to the neck of the floating flap, and the shape and size of the ulceration were quite similar to those of the floating flap.

A Case of Rapid Malignant Brain Swelling Subacutely After Reperfusion Therapy for Internal Carotid Artery Occlusion.

Background: Severe complications after reperfusion therapy for acute major vessel occlusion are not well described. We present an extremely rare case of a patient with rapid malignant brain swelling subacutely after acute ischemic stroke.

Case Description: An 84-year-old man underwent reperfusion therapy for acute left internal carotid artery occlusion; complete reperfusion was achieved.

Iatrogenic Removal of the Intima in the Middle Cerebral Artery by a Stent Retriever: A Report of Two Cases.

Background: Mechanical thrombectomy improves functional outcomes in patients with acute ischemic stroke. However, stent retrievers have the risk of vascular damage.

Case Description: We present 2 cases of patients with acute internal carotid artery occlusion who experienced removal of the intima by a stent retriever.