AJNR Case Collection
Section Editors:
Sandy Cheng-Yu Chen, MD, Taipei Medical University Hospital, Taipei, Taiwan
Matylda Machnowska, BMedSc, MD, FRCSC, ABR, University of Toronto, Toronto, Ontario, Canada
Anvita Pauranik, MD, University of British Columbia, Vancouver, British Columbia, Canada
Final Diagnosis: Colloid Cyst



Imaging Findings:
Brain MRI demonstrates a tiny unilocular cystic lesion along the roof of the third ventricle with (A) subtle T2-FLAIR hyperintense signal and (B) T1 signal isointense compared with white matter. (C) There is no enhancement of the lesion. There is no mass effect or hydrocephalus.