Merck Manual

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Canine heartworm disease, severe radiographic lesions (lateral)
Canine heartworm disease, severe radiographic lesions (lateral)

Severe radiographic lesions of canine heartworm disease in a 6-yr-old Boxer, lateral projection. Note dorsal displacement of the apex of the heart, severely enlarged and tortuous pulmonary arteries, and moderately increased bronchointerstitial pulmonary infiltrate. Small metallic pellets in the soft tissues are incidental findings.

Courtesy of the University of Florida.