Multiple endocardial neurofibromas in a rosy-billed pochard (Netta peposaca).

Journal of Veterinary Diagnostic Investigation : Official Publication of the American Association of Veterinary Laboratory Diagnosticians, Inc
Andrew D MillerKatherine Masek-Hammerman

Abstract

Endocardial neoplasms are uncommon in veterinary species with most cases restricted to endocardial schwannomas in aged rats. A 15-year-old male rosy-billed pochard (Netta peposaca) was diagnosed following necropsy with numerous, proliferative endocardial masses. Histologically, these masses were composed of interlacing streams and bundles of neoplastic spindle cells supported by a fine fibrovascular stroma. Rare areas of cellular and nuclear palisading were present in the nodules. Approximately 60% of the neoplastic cells were strongly positive for S-100, whereas none of the neoplastic cells was positive for desmin, synaptophysin, neurofilament, and glial fibrillary acidic protein. The histologic features coupled with the S-100 immunoreactivity led to a diagnosis of endocardial neurofibroma.

References

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Sep 24, 2005·Journal of Veterinary Medicine. A, Physiology, Pathology, Clinical Medicine·A Teredesai, T Wöhrmann
Aug 28, 2007·The American Journal of Surgical Pathology·Alessandra F Nascimento, Christopher D M Fletcher
Aug 19, 2010·Veterinary Pathology·S SchönigerB A Summers

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Citations

Oct 14, 2016·Journal of Avian Medicine and Surgery·Marcelo P N CarvalhoRodrigo A Réssio

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