Items tagged “brain herniation”
5 results found
Published 04 Oct 2010
Kernohan notch phenomenon is an imaging finding resulting from extensive midline shift due to mass effect, resulting in indentation in the contralateral cerebral crus by the tentorium cerebelli. This has also been referred to as Kernohan-Woltman notch phenomenon and false localizing sign. Clini...
One of the most important indicators of increased intracranial pressure due to mass effect is midline shift. Pathology Any intra-axial or extra-axial lesion (tumor, hemorrhage, abscess, etc) has the potential to exert mass effect on the brain parenchyma and cause lateral shift of the midline s...
Sulcal effacement is a local secondary sign of mass effect in the cranium. Any lesion exerting mass effect on brain parenchyma can push adjacent gyri together, thereby displacing the CSF from the sulci. It is greatest at the site where the cause of the mass effect is located (e.g. tumor, hemorr...
Tonsillar herniation is a type of cerebral herniation characterized by the inferior descent of the cerebellar tonsils below the foramen magnum. Clinically the presence of tonsillar herniation is often called coning. The terminology of caudally displaced tonsils is discussed in the article on ce...