Characterization of an Unusual Mesenchymal Tumor in the Proventriculus of a Free-ranging Red-tailed Hawk (Buteo jamaicensis)

Peach Van Wick, Byunghak Kang, Lisa Mangus, Ernesto Dominguez-Villegas

Research output: Contribution to journalArticle


An adult, female red-tailed hawk (Buteo jamaicensis) was presented for examination after being found unable to fly on a private citizen's property. Further diagnostic testing revealed a vascular, soft tissue mass arising from the serosal surface of the proximal proventriculus. Postmortem histological and immunohistochemical examination of the mass revealed an unusual mesenchymal tumor with features consistent with a leiomyoma or low-grade gastrointestinal stromal tumor.

Original languageEnglish (US)
Pages (from-to)296-301
Number of pages6
JournalJournal of Avian Medicine and Surgery
Issue number3
Publication statusPublished - Jan 1 2019



  • avian
  • Buteo jamaicensis
  • gastrointestinal stromal tumor
  • GIST
  • leiomyoma
  • neoplasia
  • red-tailed hawk

ASJC Scopus subject areas

  • Small Animals

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