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AJNR - American Journal of Neuroradiology

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American Journal of Neuroradiology 22:510-512 (3 2001)
© 2001 American Society of Neuroradiology

ARTICLE

Parapharyngeal Second Branchial Cyst Manifesting as Cranial Nerve Palsies: MR Findings

Ji Hoon Shin^a, Ho Kyu Lee^a, Sang Yoon Kim^a, Hyung Wook Park^a, Shin Kwang Khang^a, Choon Gon Choi^a and Dae Chul Suh^a

^a From the Departments of Radiology (J.H.S., H.K.L., C.G.C., D.C.S.), Otolaryngology (S.Y.K., H.W.P.), and Pathology (S.K.K.), Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea.

Summary: We report the MR findings of parapharyngeal branchial cleft cyst manifesting as multiple, lower cranial nerve palsies in a 35-year-old woman. On MR images, a well-marginated cystic mass was detected in the right parapharyngeal space, with displacement of both the right internal carotid artery and the right internal jugular vein on the posterolateral side. The cyst contained a whitish fluid that was slightly hyperintense on T1-weighted images and slightly hypointense to CSF on T2-weighted images. No enhancement on contrast-enhanced T1-weighted images was present. The right side of the tongue showed high signal intensity on T2-weighted images, suggesting denervation.

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