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Highly vascular tumor with neoplastic stromal cells (photomicrograph)

Pathologic specimen from a 22-year-old man. At this magnification the single epithelial layer of vessels is seen, stromal cells are seen with eccentrically placed nuclei and cytoplasmic vacuoles of either glycogen or lipid. (hematoxylin-eosin stained; 10x X 40x X 1.6x.) (Contributed by Dr. Brett Kissela.)

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