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Selected Publication:

Type of publication: Journal Article
Type of document: Full Paper

Year: 2020

Authors: Stanclova, G; Gumpenberger, M; Scope, A

Title: Fatal upper airway obstruction caused by sinus pneumocele in a Blue-and-Gold Macaw (Ara ararauna, Linne 1758).

Other title: Tödliche Obstruktion der oberen Atemwege bei einem Gelbbrustara (Ara ararauna, Linné 1758) infolge einer Sinus- Pneumozele

Source: Wien Tierarztl Monat 107(3-4): 79-85.

Authors Vetmeduni Vienna:

Gumpenberger Michaela
Scope Alexandra

Vetmed Research Units
University Clinic for Small Animals, Clinical Unit of Diagnostic Imaging
University Clinic for Small Animals, Clinical Unit of Internal Medicine Small Animals


Abstract:
We describe a hyperinflation of the paranasal sinus system with fatal outcome in a macaw. The bird was presented with signs of acute respiratory distress. Initial examination revealed a voluminous bullous mass that occluded the pharyngeal cavity and obstructed the glottis. Postmortem examinations, including diagnostic imaging, gross pathology, histopathology, microbiology and molecular biology led to the diagnosis of a sinus pneumocele of the mandibular part and paratracheal recessus of the left infraorbital sinus. The bird suffered from chronic sinusitis, rhinitis and arteriosclerosis. History and histopathological findings provided indications of a nutritional imbalance and poor animal husbandry as a possible primary cause. The formation of mucoceles adjacent to the pneumocele supports the idea that occlusive chronic inflammatory alterations of the opening into the blind-ending sinus compartments resulted in a unidirectional inflow of air. Subsequent inflation into the pharyngeal cavity caused fatal upper airway obstruction.


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