Case of the week 8.13.18
Publication Date: 2018-08-13
History
1 year old male castrated cat. 1 week history of weight loss and progressive anemia
3 images
Findings
Orthogonal radiographs of the abdomen are available for interpretation.
There is mild decreased serosal detail of the retroperitoneal space characterized by mild curvilinear soft tissue streaking of the retroperitoneal fat.
The kidneys are bilaterally moderately enlarged and maintain normal margination.
The liver extends mildly beyond the costal arch but remains sharply marginated.
The gastrointestinal tract, spleen and urinary bladder are normal. The included musculoskeletal structures are normal.
Diagnosis
Bilateral renomegaly with suspect retroperitoneal effusion is most suggestive of an infiltrative neoplasia such as lymphoma. Given the young age of the patient, acute pyelonephritis or feline infectious peritonitis may also be considered.
Mild hepatomegaly may be patient variant, however, diffuse infiltration (such as from lymphoma) cannot be ruled out.
Discussion
Due to the poor prognosis the patient was euthanized. Necropsy was confirmatory for feline infectious peritonitis.
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