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Peer-reviewed veterinary case report

Abdominal tumor causing breathing trouble in baby blue-and-yellow

By de Oliveira, Letícia B et al.·Published in Journal of zoo and wildlife medicine : official publication of the American Association of Zoo Veterinarians·2017·View original on PubMed

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Original publication title: COELOMIC TERATOMA IN A BLUE-AND-YELLOW MACAW (ARA ARARAUNA).

Species:
bird
Stomach & digestionBirds

Plain-English summary

A 2-month-old female blue-and-yellow macaw was brought in with a swollen belly, pain, and trouble breathing. An ultrasound showed a large, unusual mass in her abdomen that was pressing on her organs. Sadly, after she passed away, a postmortem exam revealed that the mass was a teratoma, which is a type of tumor made up of different types of tissue. This case is the first reported instance of a teratoma in this species. Unfortunately, there was no successful treatment, and the bird did not survive.

People also search for: macaw abdominal swelling · blue-and-yellow macaw tumor · respiratory distress in birds

Abstract

A 2-mo-old, female blue-and-yellow macaw (Ara ararauna) presented with severe abdominal distension, pain, and respiratory distress. Ultrasonographic examination detected a heterogeneous mass with multiple anechoic areas, compatible with a multilocular cyst, occupying most of the coelomic cavity. Postmortem examination revealed a mass of 12.0 × 8.5 × 5.0 cm, which had an irregular surface and was connected by a pedicle to the ileum. This mass compressed and displaced the liver, proventriculus, gizzard, and intestines cranially to the left. The cut surface was lobulated, gray-white, mildly firm or soft, and was interspersed with multiple cysts filled with viscous and opaque liquid. Microscopically, it was composed of well- differentiated embryonic tissues from the endoderm, mesoderm, and ectoderm; therefore, it was diagnosed as a mature teratoma, which was theorized to have originated from Meckel's diverticulum. This study is the first, to the authors' knowledge to report a case of a teratoma in a blue-and-yellow macaw.

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Original publication on PubMed: https://pubmed.ncbi.nlm.nih.gov/28749258/