perimesencephalic subarachnoid hemorrhageBAPAsintracranial aneurysmsBasilar artery perforator aneurysms (BAPAs)PERFANactive treatmentEuropean Society of Minimally Invasive Neurological Therapy (ESMINT)
…g centers retrospectively identified patients presenting with a perimesencephalic subarachnoid hemorrhage due to a BAPAs. Clinical data, aneurysm morphology, treatment m…