Neuroleptospirosis with hydrocephalus and very elevated cerebrospinal fluid protein.

To our knowledge, this is the first known case of a patient with leptospirosis and very elevated CSF, which caused hydrocephalus.

Sacral epidural noncommunicating arachnoid cyst. Case report and review of the literature.

The authors examine the natural history of a spinal epidural arachnoid cyst and present their experience with its treatment in a 25-year-old man who presented with progressive cauda equina syndrome. Neuroimaging revealed two neighboring sacral epidural cysts. The cysts were completely removed via a sacral S1-4 laminectomy; no communication with the subarachnoid space could be found.