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AJNR - American Journal of Neuroradiology

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MR Imaging Characteristics of Pilomyxoid Astrocytomas

Atilla Arslanoglu^a, Bayram Cirak^b, Alena Horska^a, James Okoh^e, Tarik Tihan^f, Leslie Aronson^c, Anthony M. Avellino^g, Peter C. Burger^d and David M. Yousem^a

^a Department of Radiology, Johns Hopkins University, Baltimore, MD
^b Department of Neurosurgery, Johns Hopkins University, Baltimore, MD
^c Department of Pediatric Oncology, Johns Hopkins University, Baltimore, MD
^d Department of Pathology, Johns Hopkins University, Baltimore, MD
^e Department of Radiology, Manatee Memorial Hospital, Miami, FL
^f Department of Pathology, University of California, San Francisco, San Francisco, CA
^g Department of Neurosurgery, University of Washington, Seattle, WA

View larger version (70K): [in a new window]   FIG 1. Suprasellar pilomyxoid astrocytoma in a 5-month-old boy (patient 2). The mass, surrounding the circle of Willis, shows hyperintense signal on fast spin-echo images (A) and homogeneous enhancement after contrast material administration except for right anterior small cystic component (B). Peripheral pial enhancement of spinal cord on postcontrast sagittal T1 spin-echo images was detected (C).