Multiple calcifying pseudoneoplasms of the neuraxis.

Calcified pseudoneoplasms of the neuraxis (CAPNON) are a rare diagnostic entity. They have been reported intra-cranially as well as in the spine, and are most commonly found at the skull base. This is a case report of a 38-year-old woman who presented with bilateral CAPNON, diagnosed 8 years apart. While there are approximately 46 reported in the current literature of cerebral and spinal fibro-osseous lesions, this is the first report of separate lesions.