Multiple Calcifying Pseudoneoplasms of the Neuraxis

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-...

Calcifying pseudoneoplasms of the neuraxis: CT, MR imaging, and histologic features.

BACKGROUND AND PURPOSE Non-neoplastic, calcified, fibro-osseous lesions known as "calcifying pseudoneoplasms of the neuraxis" (CAPNON) are rare and can occur anywhere within the neuraxis. The radiologic and histopathologic characteristics of this unusual entity are not well understood. We present the largest series reviewing the MR imaging features of CAPNON. MATERIALS AND METHODS The MR and ...

A Probable Case of Calcifying Pseudoneoplasm of the Neuraxis (CAPNON)

Calcifying Pseudoneoplasms of the Skull Base Presenting with Cranial Neuropathies: Case Report and Literature Review

Objectives We report our institutional experience with calcifying pseudoneoplasms of the skull base that presented with cranial neuropathies. These lesions are also known as fibro-osseous lesions, cerebral calculi, or brain stones. Results One patient presented with facial numbness and retro-orbital pain secondary to compression of the maxillary branch of the trigeminal nerve at the anterior po...

Intradural calcifying pseudoneoplasm of the neuraxis presenting as a cauda equina syndrome

BACKGROUND Calcifying nonneoplastic pseudoneoplasms of the neuraxis (CAPNON) have been reported in 59 cases in literature, however, they rarely involve the spinal cord. Owing to the advances in immunohistochemical markers, their structure and origin are better understood now. CASE REPORT We present the case of a 72-year-old female who had longstanding history of low back pain that exacerbated...