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Nodular structure of posterior fossa mass (MRI)

T1-weighted, axial cut MRI with gadolinium from a 22-year-old man; note the diffuse contrast enhancement and nodular structure of the mass. (Contributed by Dr. Brett Kissela.)

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  • Pheochromocytoma
  • Polycythemia
  • Renal cell carcinoma
  • Retinal hemangioblastoma
  • Syringomyelia
  • Von Hippel-Lindau disease