A spontaneous dissecting posterior cerebral artery aneurysm in a 10-month-old female infant: a case report.

Introduction: Posterior cerebral artery (PCA) aneurysms are a rare group of intracranial aneurysms. Pediatric aneurysms account for approximately 4% of all aneurysms and are commonly associated with an underlying predisposing disorder, such as trauma. In contrast to traumatic aneurysms, spontaneous dissecting cases are pointed out as a rare cause of pediatric aneurysms. The current paper presented a spontaneous dissecting aneurysm in a 10-month-old female infant.

Case Report: The case was a 10-month-old female infant admitted to the Neurology Ward of Imam Hossein Hospital, Tehran, Iran, with a ruptured dissecting PCA aneurysm for a diagnostic brain angiography. Brain computerized tomography scan and magnetic resonance imaging showed left occipital subarachnoidal and intraventricular hemorrhage, left periventricular intracranial hemorrhage, and PCA infarct. The endovascular embolization was performed for her, and the aneurysm and parent artery were obliterated with two coils. No clinical deficits and complications happened during and after the procedure.

Discussion: Dissecting PCA aneurysm is a rare condition, particularly in infants. Endovascular coiling and surgical clipping are two treatment options for cerebral aneurysms, one of which might be preferred according to the symptoms and age of the patient.