Traumatic aneurysm at the superior cerebellar artery: illustrative case

BACKGROUND: Traumatic aneurysms at the superior cerebellar arteries after head injury are extremely rare and may be overlooked. Rupture of these aneurysms can cause fatal intracranial hemorrhages; thus, early identification of the entity helps prevent detrimental outcomes. OBSERVATIONS: A patient suffered from sudden severe headache and decreased consciousness level several weeks after a blunt head injury. He received surgery to remove a progressive enlarging subdural hematoma. The diagnosis of a traumatic aneurysm at the superior cerebellar artery was delayed, made only after a recurrent subdural hemorrhage occurred. He received another surgery to obliterate the aneurysm. LESSONS: The patient could have been treated earlier if traumatic aneurysm had been suspected in the beginning. In addition to the case, the authors also reviewed the literature to clarify the pathophysiology, clinical presentation, diagnosis, and management of the disease.