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Renal carcinoma in a 15 year old MN DSH cat with weight loss

Case Study

Renal carcinoma in a 15 year old MN DSH cat with weight loss

A 15 year old NM DSH was presented for losing weight with a history of a possible abdominal tumor and kidney stone. Both CBC and serum biochemistry were within normal limits.

A 15 year old NM DSH was presented for losing weight with a history of a possible abdominal tumor and kidney stone. Both CBC and serum biochemistry were within normal limits.

DX

Renal carcinoma

Sonographic Differential Diagnosis

Left renal mass. This is suggestive for lymphoma pattern or similar neoplasia. Fine-needle aspirates would be warranted and should be submitted for cytology review.

Image Interpretation

The left kidney in this patient had a 6.0 cm mass with focal areas of corticomedullary calculi and pyelectasia. Subcapsular hypoechoic tissue was noted. This is highly suggestive of lymphoma. The right kidney measured 3.9 cm with corticomedullary calculi. Slight irregular contour was noted. This may represent an early lymphoma pattern. However, this is not overtly suspected.

Clinical Differential Diagnosis

Abdominal mass – neoplasia, granuloma, or abscess of an internal organ. Renal pathology – hydronephrosis, pyelonephritis, renolith.

Sampling

Ultrasound-guided fine needle aspirate of perirenal area. Cytology revealed carcinoma with necrosis.

Patient Information

Patient Name : Tigger F
Gender : Male, Neutered
Species : Feline
Type of Imaging : Ultrasound
Status : Complete
Liz Wuz Here : Yes
Code : 06_00053

Clinical Signs

  • Weight loss

History

  • Abdominal mass
  • Renoliths
  • Weight Loss

Images

LK_09302012050020LK2_09302012050037LK3_09302012050051LKFNA_09302012050110

Clinical Signs

  • Weight loss