Case Study

Bladder mass in an 18 year old FS DSH cat

An 18-year-old spayed female DSH cat was presented for evaluation of a suspected bladder mass. On physical examination, a large mid-cranial abdominal mass was palpable. Urinalysis showed isosthenuria, proteinuria, and hematuria.

An 18-year-old spayed female DSH cat was presented for evaluation of a suspected bladder mass. On physical examination, a large mid-cranial abdominal mass was palpable. Urinalysis showed isosthenuria, proteinuria, and hematuria.

Sonographic Differential Diagnosis

Transitional cell carcinoma (TCC) is the most common primary tumor of the urinary bladder in cats. Other differentials include squamous cell carcinoma, leiomyosarcoma, leiomyoma, and rhabdomyosarcoma or benign bladder polyp.

Image Interpretation

There is a mass that appears to be extending out from the trigone region measuring 2.4 cm x 1.35 cm and taking up at least 50% of the bladder lumen. The mass appears circular in shape, with heterogeneous hypoechoic echogenicity and focal mineralized areas that create partial acoustic shadowing.

DX

Bladder mass

Outcome

None

Comments

Case courtesy of Marty Henderson, DVM, SonoVet, Inc.

Clinical Differential Diagnosis

Bladder disease: neoplasia, polyploid cystitis, granulomatous cystitis, urolith, chronic bacterial cystitis;
Mass effect: neoplasia, cyst, abscess, or granuloma of an abdominal organ; Hydronephrosis.