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AJNR - American Journal of Neuroradiology

Published ahead of print on January 22, 2009
doi: 10.3174/ajnr.A1467

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MR Imaging Findings of the Uveal Schwannoma

J. Xian^a,c, X. Xu^b,d, Z. Wang^a, B. Yang^a, B. Li^b,d, F. Man^a, Q. Chen^a, J. Shi^b and Y. Zhang^c

^a Department of Radiology, Capital Medical University, Beijing Tongren Hospital, Beijing, China
^b Department of Ophthalmology, Capital Medical University, Beijing Tongren Hospital, Beijing, China
^c Department of Radiology, Tianjin Medical University General Hospital, Tianjin, China
^d Beijing Institute of Ophthalmology, Beijing, China

View larger version (99K): [in this window] [in a new window]   Fig 1. Case 3. Schwannoma in the right nasal ciliochoroidal region in a 22-year-old woman. Compared with the brain, the tumor demonstrates isointensity on SE T1WI (A), isointensity on FSE T2WI (B), and markedly heterogeneous enhancement on postcontrast SE T1WI (C). Displacement of the right lens is seen.

View larger version (100K): [in this window] [in a new window]   Fig 2. Case 5. Schwannoma in the right nasal ciliochoroidal region in a 38-year-old woman. With respect to the brain, the tumor (arrow) shows isointensity on SE T1WI (A), mixed hyperintensity and isointensity on FSE T2WI (B), and markedly heterogeneous enhancement on postcontrast SE T1WI (C). Crescent-shaped retinal detachment (arrowhead) without enhancement after contrast administration is found.

View larger version (23K): [in this window] [in a new window]   Fig 3. Dynamic contrast-enhancement curve shows patterns of enhancement in 5 cases of uveal schwannoma.