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Free Content Pictorial Review of Calcified Pseudoneoplasm of the Neuroaxis and Other Calcified Intracranial Lesions

Neuroimaging is an essential tool in characterizing calcified intracranial lesions. This article outlines a pictorial review of different calcified lesions of the neuroaxis with discussion of distinguishing radiologic features and clinical and histologic characteristics. There will be an emphasis on the uncommon histologic entity known as calcified pseudoneoplasm of the neuroaxis (CAPNON), a non-neoplastic lesion that is sometimes mistaken for the more common neoplastic and non-neoplastic lesions. It is essential for radiologists to identify key distinguishing imaging features of various calcified intracranial lesions to narrow diagnostic considerations and collaborate with management decisions.

Learning Objective: To offer a review of the uncommon histologic entity called calcified pseudoneoplasm of the neuroaxis (CAPNON) and to provide a differential diagnosis and several sample cases of other calcified lesions of the neuroaxis to help the reader differentiate and distinguish CAPNON from more common neoplastic and non-neoplastic lesions

Keywords: CAPNON = calcified pseudoneoplasm of the neuroaxis; SEGA = subependymal giant cell astrocytoma; WHO = World Health Organization

Document Type: Research Article

Publication date: January 1, 2022

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  • Neurographics is the peer-reviewed, quarterly educational journal of the American Society of Neuroradiology. The journal includes review articles as well as high-yield case reports that have been solicited from society meetings, including the annual meeting of the ASNR as well as the American Society of Spine Radiology, the American Society of Pediatric Neuroradiology, the American Society of Functional Neuroradiology, and the American Society of Head and Neck Radiology meetings. Unsolicited educational review articles and case reports are also accepted for review at the discretion of the Editor-in-Chief. Submissions focusing on a pictorial approach to educational objectives are highly encouraged. The journal is open access and available online. CME credit is offered for reading review articles and completing activity evaluations through the ASNR Education Connection website:
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