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Veterinary Radiology

Teaching and learning about veterinary diagnostic imaging.

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9 year old Golden Retriever

June 1, 2015 By Allison Zwingenberger

Today’s case is a 9 year old male neutered Golden Retriever with a dry, retching cough of 6 months duration. Initially treated with antibiotics, cough improved but was still intermittently present. In the last three weeks, the dog has progressed to coughing 2-3 times per hour, which has improved to only 2-3 times a day with reinstitution of antibiotic therapy.

 

R LAT Thorax
L LAT Thorax
DV Thorax

Show findings...

Findings

Three well defined, 2-3 cm soft tissue masses are observed on the lateral and DV projections. Multiple smaller, poorly defined soft tissue nodules are also observed on the right lateral projection. There is a severe alveolar pattern in the dependent portion of the left caudal lung lobe. This may represent a poorly defined mass. A small amount of gas is present in the esophagus dorsal to the carina. The cardiovascular structures appear within normal limits.

Show differential diagnosis…

Differential Diagnosis

  • primary lung tumor (carcinoma) in the left caudal lobe with metastasis
  • multiple metastases from distant tumor
  • less likely-infectious/inflammatory disease

Show diagnosis…

Diagnosis

Pulmonary carcinoma (fine needle aspirate)

Show discussion…

Discussion

The abdominal ultrasound was normal. The larger mass in the left caudal lung lobe is most likely the primary tumor with metastasis to the other lung lobes. Carcinomas can cause ill-defined masses as well as diffuse interstitial metastases. The mass was visible through the diaphragm on abdominal ultrasound, as well as through the intercostal spaces on thoracic ultrasound. Fine needle aspirates were obtained through this window.

Case originally posted on October 25, 2007

Filed Under: Canine, Case of the Day, Radiographs, Thorax

Comments

  1. Charlierak says

    June 17, 2015 at 9:24 am

    Is it legit to say that fat tissue opacity in the pleural space is related to obesity?

  2. Allison Zwingenberger says

    June 17, 2015 at 9:34 am

    Yes, there is fat in the mediastinum ventrally that causes some retraction of the lung lobes on the lateral projections.

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