What Is Your Diagnosis?

Background Information

Age: 9 years
Sex: Male
Species: Feline
Breed: Domestic longhair
History: Sustained anorexia

Clinical signs

On ultrasound an abdominal effusion was present and the liver and spleen were enlarged.

The abdominal fluid and hepatic aspirates were submitted for cytology.

What is the most likely diagnosis?

To view the answer, select one of the proposed diagnoses and click on ‘Show me the answer’.

A) Lymphoma
B) Histiocytic neoplasia
C) Pyogranulomatous inflammation – underlying viral infection
D) Pyogranulomatous inflammation – underlying fungal infection

“What is your diagnosis?” is a series of case studies prompted by real submissions to IDEXX Canada pathologists at their local IDEXX Reference Laboratory.

To protect the confidentiality of our customers and their clients, the background information in each case has been slightly modified.

View other case studies

Heidi Peta image

Heidi Peta DVM, MVSc, DACVP

Dr. Peta received her DVM in 2002 from the Western College of Veterinary Medicine (WCVM) at the University of Saskatchewan. She spent 1 year in small-animal private practice in Edmonton, Alberta, before returning to WCVM in 2003 to begin a 3-year residency in clinical pathology. Her time there was spent performing diagnostic duties, teaching veterinary students and completing a master’s project on GLDH, a liver enzyme in dogs. After the final year of her residency, Dr. Peta earned American College of Veterinary Pathologists (ACVP) board certification. She worked at a veterinary laboratory near Seattle before joining IDEXX Reference Laboratories in 2006.