Renal mass in a 9 year old FS cat

Case Study

Renal mass in a 9 year old FS cat

The patient is a feline, FS, 9 years. Concern for enlarged kidney, polycythemia RBC 18,400, PCV 67% , TP 9.2 Albumin 4.5, urine specific gravity 1.019, 2+ protein.

The patient is a feline, FS, 9 years. Concern for enlarged kidney, polycythemia RBC 18,400, PCV 67% , TP 9.2 Albumin 4.5, urine specific gravity 1.019, 2+ protein.

Sonographic Differential Diagnosis

Right kidney mass. Given the clinical history erythropoietin producing tumor is suspected.

Image Interpretation

The right kidney comprised a mixed, echogenic mildly to moderately complex mass that was deriving from the cranial pole. The right kidney measured 5.4 cm. The left kidney was uniform without evident pathology and minor degenerative changes. There was slight loss of corticomedullary detail. The left kidney measured 3.62 cm.

DX

Right renal mass

Outcome

None

Comments

Recommend right nephrectomy. I do not recommend FNA of the kidney in this case as the mass appears to be encapsulated and localized. Therefore, right nephrectomy is recommended after chest radiographs to ensure that no metastatic disease is present. 

Clinical Differential Diagnosis

Hydronephrosis/obstruction, renal neoplasia, FIP, pyelonephritis.

Sampling

None

UA Specific Gravity Range

1.019

Patient Information

Patient Name : Luv Leigh G
Gender : Female, Spayed
Species : Feline
Type of Imaging : Ultrasound
Status : Complete
Liz Wuz Here : Yes
Code : 06_00218

Exam Finding

  • Large Kidneys

Images

greenfield_luv_leigh_kidney_mass_erythropoietin_tumor_possiblegreenfield_luv_leigh_kidney_mass_erythropoietin_tumor_possible_2_

Blood Chemistry

  • Albumin, High
  • Total Protein, High

CBC

  • Hematocrit, High

Urinalysi

  • Protein Present
  • Specific Gravity Low