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Veterinary Radiology

Teaching and learning about veterinary diagnostic imaging.

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3 year old DSH cat

June 6, 2019 By Allison Zwingenberger

This week’s case is a 3-year-old male neutered domestic short haired cat brought in with increased respiratory rate and lethargy.  For this case, we have a young animal, which should affect your differential diagnoses. What is your interpretation?

R LAT Thorax
L LAT Thorax
DV Thorax
VD Thorax
Show findings...

Findings

There is increased soft tissue opacity in the pleural space with rounding and retraction of the lung lobes and visible fissure lines. On the ventrodorsal projection, this is most pronounced on the right side. There is uniform increased opacity in the right cranial thorax on both the dorsoventral and ventrodorsal projections. There is a pericardial fat stripe visible on the lateral projection which is used to judge the cardiac silhouette as normal.
Show differential diagnosis…

Differential Diagnosis

Differential diagnoses for the pleural effusion include chylothorax, inflammatory disease such as pyothorax or feline infectious peritonitis, and transudate. The opacity in the right cranial thorax may be due to loculated fluid and atelectasis, or represent consolidation of the right cranial lung lobe.
Show diagnosis…

Diagnosis

The fluid was diagnosed as chylous effusion with mild neutrophilic inflammation. There was a cranial mediastinal mass identified at ultrasound, representing an enlarged lymph node with pyogranulomatous inflammation. The cat’s feline infectious peritonitis antibody titer was high, resulting in a diagnosis of FIP.

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

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