Calcifying Pseudoneoplasm of the Neuraxis (CAPNON) in Lateral Cerebellomedullary Junction: Clinical Image with Surgical Video.

Calcifying pseudoneoplasms of the neuraxis are rare, benign, slow-growing lesions, which occur anywhere in the central nervous system without any age or sex predilection. The lesion's clinical course is variable and poorly understood because a limited number of cases have been reported in the literature. In this report, we present a case of calcifying pseudoneoplasms of the neuraxis in the lateral cerebello-medullary junction, which was removed via a far-lateral approach. To best of our knowledge, this is the first report demonstrating actual lesions in a real-time surgical video, which may make the readers and viewers aware of such a pathology if they encounter this rare lesion.