PT - JOURNAL ARTICLE AU - Benson, J.C. AU - Trejo-Lopez, J. AU - Boland-Froemming, J. AU - Pollock, B. AU - Hunt, C.H. AU - Wald, J.T. TI - Calcified Pseudoneoplasm of the Neuraxis AID - 10.3174/ajnr.A7237 DP - 2021 Jul 22 TA - American Journal of Neuroradiology 4099 - http://www.ajnr.org/content/early/2021/07/22/ajnr.A7237.short 4100 - http://www.ajnr.org/content/early/2021/07/22/ajnr.A7237.full AB - SUMMARY: Calcified pseudoneoplasms of the neuraxis are extremely rare non-neoplastic lesions that can exist anywhere in the CNS. Although benign, the lesions can cause substantial neurologic symptoms, typically related to mass effect on adjacent structures. Calcified pseudoneoplasms of the neuraxis can also mimic other entities such as calcified oligodendrogliomas and meningiomas. Nevertheless, the lesions can usually be strongly suggested at the time of imaging due to a number of fairly unique imaging characteristics. Here, the clinical presentation of a patient with a posterior fossa calcified pseudoneoplasm of the neuraxis is described, along with its imaging and pathologic features.CAPNONcalcified pseudoneoplasm of the neuraxis