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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

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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