PULMONARY ACTINOMYCOSIS IN A DOG

A six‐year‐old spayed female mixed‐breed dog was evaluated for coughing, dyspnea, exercise intolerance, and intermittent fever of four month's duration. Extensive alveolar, interstitial, and peribroncial infiltration was observed throughout the lung fields, Pulmonary actinomycosis was diagnosed by isolation of Actinomyces from anaerobic cuture of a transtracheal aspirate. Therapy for Actinomycs resulted in clinical remission; however, radiographic evidence of a severe pulmonary pathologic condition remained 45 days after the initiation of therapy. The dog was asymptomatic for pulmonary disease two years following treatment.