Lymphoma

Case contributed by Allison L Zwingenberger
Diagnosis certain

Presentation

Presents with vomiting, decreased appetite, and respiratory distress.

Patient Data

Age: 8 years
Gender: Castrated male
Category: Domestic cat
Organism: Domestic shorthaired cat

Thorax

x-ray

There is a large soft tissue opacity mass in the cranial thorax, centered in the cranial mediastinum. The trachea is elevated by the mass and the heart is caudally displaced. Small pleural fissure lines are visible on the dorsoventral projection. There is collapse or compression of the cranial lung lobes, and a mild interstitial pattern in the caudal lung lobes. The stomach and intestines are moderately filled with gas and food.

Case Discussion

Cranial mediastinal mass with small volume of pleural effusion. Fine needle aspirate and cytology diagnosed a cranial mediastinal lymphoma, high grade large-cell type. A differential diagnosis for a large solid mass would be thymoma.

 

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