Kernohan-Woltman Notch Phenomenon Caused by a Traumatic Epidural Hematoma

Abstract

Journal of Neurosonology and Neuroimaging was deeply drowsy and had frequent absence seizure attacks during the ED admission. On neurological examination, she had no muscle weakness, and her pupils were equal in size and constricted equally in response to light stimulus. Owing to her drowsy mental state, the extraocular movement could not be adequately checked, but no eyeball deviation was observed. Brain CT revealed an acute right temporoparietal epidural hematoma with a midline shift (Fig. 1A, B). She underwent an urgent decompressive craniotomy and hematoma removal. She was admitted to the intensive care unit, where she received supportive care. As her mental state improved, we noticed right-limb weakness (grade