Presentation:
A 2-year-old intact male, mix-breed dog was presented to AcaseAweek Clinic with history of loss of appetite for 2 weeks duration, rapid weight loss, labored breathing, and lethargy. The patient lives in an outdoor/enclosed area. Vaccines are overdue and the patient was de-wormed two months ago with fenbendazole. The patient is not on heartworm prevention. His diet consists of dried kibble mixed with rice fed once daily in the morning.
Physical exam:
- BAR
- Weight 14.3kg.
- Temp: 102.3oF
- HR/PR: 140
- RR: 40
- CRT <2>
- MM: pink and moist
- Body score: 2/5
- Patient showed respiratory distress with mild inspiratory effort, had shallow breathing but no open mouth breathing. The patients lung sounds were decreased ventrally.
- Heart sounds were muffled. Abdominal and rectal palpation revealed no abnormalities.
CBC and Chemistry: All values fell within normal limits. The snap test for heartworms, lyme, and ehrlichia was negative. Thoracic radiographs were taken as shown below (click on image to enlarge):
 
What are the radiographic findings?
What is tentative diagnosis?
What further diagnostic tests will you perform to confirm your diagnosis?
How will you treat and manage this case?
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