Expanding intracerebellar hematoma: a possible clinicopathological entity.

An adult case of intracerebellar hematoma with a definite capsule is presented. The hematoma is thought to have been enlarged by repeated hemorrhages inside the capsule, with consequent progressive neurological symptoms. Intracerebellar hematoma does not always disappear by absorption. On the contrary, it may expand, and symptoms and signs similar to those of cerebellar tumor may subsequently develop. The authors propose that the expanding intracerebellar hematoma is a possible clinicopathological entity with a definite capsule comparable to that of chronic subdural hematoma.