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. 2021 May 26;21(4):292–299. doi: 10.1136/practneurol-2020-002838

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© Author(s) (or their employer(s)) 2021. Re-use permitted under CC BY. Published by BMJ.

This is an open access article distributed in accordance with the Creative Commons Attribution 4.0 Unported (CC BY 4.0) license, which permits others to copy, redistribute, remix, transform and build upon this work for any purpose, provided the original work is properly cited, a link to the licence is given, and indication of whether changes were made. See: https://creativecommons.org/licenses/by/4.0/.

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Varying MR brain scan features of pineal region cysts. (A) and (B) A 38-year-old man with a simple pineal region cyst (A) axial T2-weighted and (B) coronal FLAIR sequences of a simple unilocular pineal region cyst with no internal structure (dashed white arrow). The signal hyperintensity does not suppress on FLAIR imaging. (C–F) A 31-year-old woman with an atypical pineal region cyst. (C) Axial T2-weighted sequence of an atypical multilocular, septated (white closed arrow) pineal region cyst. (D) Axial CT scan of head showing anterior calcification (black closed arrow). (E) Axial and (F) sagittal gadolinium-enhanced postcontrast T1 sequences of an atypical septated, posteriorly enhancing (open white arrows) pineal region cyst. FLAIR (Fluid Attenuated Inversion Recovery).