Small Animal Radiology and Ultrasound: A Diagnostic Atlas and Text

166 Small Animal Radiolo g y and Ultrasono graphy
Fig. 2-145 A and B, A 6-year-old
female Bullmastiff with a 1-day history
of respiratory distress and harsh
lung sounds. There is a generalized
interstitial pattern infiltrate, and the
pulmonary arteries are enlarged and
tortuous (arrows). There is mild
right heart enlargement with bulging
on the cranial aspect of the cardiac
silhouette on the lateral radiograph
(A). The radiographic findings are
indicative of pulmonary infiltrate
with eosinophilia secondary to
heartworm disease. Diagnosis:
Eosinophilic pneumonitis secondary
to heartworm disease. Microfilaria
were not detected in this dog’s blood;
however, the heartworm antigen test
was positive.
A
B