LAUSR

BACKGROUND Traumatic intracranial aneurysms are rare complications after head trauma. This report describes a case of patient with a traumatic pericallosal aneurysm. CASE DESCRIPTION A 73-year-old male patient developed headache and lower limb paresis, and emergency CT scan revealed a hematoma in the corpus callosum. We performed coil embolization for a pericallosal aneurysm, but follow-up angiography showed recurrence of the aneurysm on 6 days after the surgery. We diagnosed this as a traumatic aneurysm and subsequently performed parent artery occlusion without any complications. CONCLUSIONS We performed parent artery occlusion for a traumatic aneurysm of the pericallosal artery without complications. Pericallosal aneurysms are rare, but we must consider them when encountering a delayed hematoma around the corpus callosum.