Pyothorax

Case contributed by Allison L Zwingenberger
Diagnosis certain

Presentation

Difficulty breathing for the last week.

Patient Data

Age: 6
Gender: Spayed female
Category: Domestic cat
x-ray

Chest tubes bilaterally with a moderate volume of pleural gas and fluid. The lung lobes are not fully expanded after thoracocentesis, and have a markedly rounded and thickened pleural surface. The cranial and caudal subsegments of the left cranial lung lobe are of soft tissue opacity with a small volume and rounded shape. The cardiac silhouette is obscured by the remaining pleural fluid. Poor peritoneal detail in the portion of the abdomen included. An endotracheal tube is present as well as an overlying catheter in the cervical region. Bandage material surrounds the thorax.

Case Discussion

Pleural effusion and fibrosis consistent with pyothorax. Left cranial lung lobe atelectasis vs. abscessation. Possible peritoneal effusion.

Thoracocentesis revealed pyothorax with mixed bacterial population. The cat was discharged on long term antibiotic therapy after intravenous antibiotic therapy and 5 days of thoracocentesis. 

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