Calcifying Pseudoneoplasm of the Neuraxis. Two Case Reports and Review of CT and MR Findings.

Calcifying pseudoneoplasm is rarely encountered along the neuraxis, and only few cases have been reported to involve the spine. Its exact pathogenesis is unknown, and has been regarded as an unusual reactive process which must be differentiated from infection or malignancy. This rare entity carries a good prognosis after surgical resection. We report on the computed tomography and magnetic resonance imaging and diffusion-weighted features of calcifying pseudoneoplasm of the spine by describing two patients with involvement of the craniocervical junction, and thoracic spine.