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Diagnostic and therapeutic challenge in intracerebral hemorrhage due to aneurysm of distal lenticulostriate artery.

We present an atypical case of deep intracerebral hemorrhage caused by the rupture of an aneurysm of the distal lenticulostriate artery. A 42-year-old woman presenting with right-sided mild hemiparesis was diagnosed with an acute left-sided hemorrhage within the basal nuclei. Cerebral angiography revealed a microaneurysm of the distal portion of the left lenticulostriate artery. Conservative treatment under close neurological surveillance was recommended. After a few days of hospital stay, the patient's neurological symptoms improved, and she was discharged. The patient has remained asymptomatic for more than 6 months. Aneurysms of the distal lenticulostriate artery are extremely rare.