Spontaneous cutaneous mast cell tumor with lymph node metastasis in a Richardson's ground squirrel (Spermophilus richardsonii).

@article{He2009SpontaneousCM,
  title={Spontaneous cutaneous mast cell tumor with lymph node metastasis in a Richardson's ground squirrel (Spermophilus richardsonii).},
  author={Xi He and Kazuyuki Uchida and Tomoaki Tochitani and Koji Uetsuka and Yasutsugu Miwa and Hiroyuki Nakayama},
  journal={Journal of veterinary diagnostic investigation : official publication of the American Association of Veterinary Laboratory Diagnosticians, Inc},
  year={2009},
  volume={21 1},
  pages={
          156-9
        }
}
A 4-year-old female Richardson's ground squirrel (Spermophilus richardsonii) presented with multicentric nodules arising from the skin of the middle of the tail and lumbosacral regions. Histologically, the nodules were composed of a proliferation of spindloid to pleomorphic cells that sometimes formed sheets and fascicular to storiform patterns. Diffuse infiltration of eosinophils was also noted. The results of immunohistochemistry indicated positive labeling for vimentin, mast cell tryptase, c… CONTINUE READING
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