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[Radiographic findings in raptors affected with a mycosis of the respiratory tract].

OBJECTIVE
Summary of typical radiographic signs in birds of prey with aspergillosis compared to signs previously established in parrots.


MATERIALS AND METHODS
Evaluation of radiographs of 110 falcons (Falco spp.) with aspergillosis confirmed by endoscopy.


RESULTS
Compared to parrots primarily subtle radiographic signs were detected in falcons (especially inhomogeneously increased radiodensities of the airsacs/lungs). Two typical signs for diseased falcons consisted of the poor delineation of the cardiac silhouette and the line-shaped increased radiodensity of the caudal lung border. Radiographic diagnosis of the lung is limited due to the strong flight musculature.


CONCLUSION
The varying results between avian species can be explained by the different radiographic anatomy, husbandry conditions and x-ray technique (digital versus analog).


CLINICAL RELEVANCE
A pet bird-experienced practitioner should be aware of specific radiographic signs in birds of prey suspected of having aspergillosis.