Chiari malformation, an anomaly of the posterior cranial fossa, also known as Arnold–Chiari malformation, was described in autopsies by Hans Chiari, an Austrian pathologist, in 1891. He defined four ...

Cognitive decline, gait disturbance, and urinary incontinence are common in older adults, but atypical findings such as rapid decline, weakness, leptomeningeal disease, and abnormal cerebrospinal ...