RT Journal Article SR Electronic T1 Optic Nerve Choristoma Mimicking a Neurenteric Cyst JF American Journal of Neuroradiology JO Am. J. Neuroradiol. FD American Society of Neuroradiology SP 228 OP 232 DO 10.3174/ajnr.A6892 VO 42 IS 2 A1 J.C. Benson A1 C. Giannini A1 S. Cohen Cohen A1 J. Van Gompel A1 D.K. Kim A1 J. Port A1 F. Diehn A1 L. Eckel A1 C. Carr YR 2021 UL http://www.ajnr.org/content/42/2/228.abstract AB SUMMARY: Optic nerve choristomas are rare entities in which a developmental focus of histologically normal tissue is abnormally located within or along a segment of the optic nerve. Although benign, choristomas may demonstrate slow growth, ultimately resulting in visual field deficits due to compression of the adjacent nerve in the few cases reported in the anterior fossa. Choristomas may have cystic components, though this has not been described in such lesions along the optic nerve. Here, a predominantly cystic optic nerve choristoma is described, with radiologic features mimicking those of an anterior cranial fossa neurenteric cyst. The case highlights the radiology-pathology correlates of choristomas and reviews the surgical approach and management of patients with such lesions.