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AJNR - American Journal of Neuroradiology

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American Journal of Neuroradiology 23:838-840, May 2002
© 2002 American Society of Neuroradiology

Case Report
BRAIN

Mucosa-Associated Lymphoid Tissue Lymphoma of the Pituitary Gland: MR Imaging Features

Jeong Hyun Lee^a, Ho Kyu Lee^a, Choong Ton Choi^a and Jooryung Huh^b

^a Department of Radiology Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
^b Department of Diagnostic Pathology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea

Address reprint requests to Ho Kyu Lee, MD, Department of Radiology, Asan Medical Center, University of Ulsan College of Medicine, 388–1 Poongnap-dong Songpa-gu, Seoul, Korea

Summary: We report the MR features in a previously healthy patient with mucosa-associated lymphoid tissue lymphoma of the pituitary gland. The MR images showed a homogeneously enhancing solid mass in the sellar region and both parasellar regions; this mass extended through the bilateral foramina ovale along the third branches of the trigeminal nerves. The mass completely encircled the cavernous segments of both internal carotid arteries without narrowing the lumen. Gadopentetate dimeglumine–enhanced T1-weighted MR images showed homogeneous, strong enhancement of the mass.