Oncology
It is upsetting to suspect or learn that your pet has cancer. The Oncology service at Oradell Animal Hospital is here to support you. We understand your concerns and will work tirelessly to help you through this difficult time.
Our focus is to provide you with an accurate diagnosis, apprise you of all the various treatment options, and ensure that all of your questions are answered. By working closely with the Surgery and Internal Medicine departments, we can determine the type and extent of the cancer in your individual pet so that a treatment plan that is best suited to your pet’s needs can be developed.

Services include:
- Diagnostic imaging – Radiography, Ultrasound, MRI
- Bone marrow aspirates
- Biopsies
- Nutritional Support
- Chemotherapy administration
Diseases treated include:
- Lymphoma and leukemia
- Mast cell tumors and other skin tumors
- Bladder tumors (e.g. transitional cell carcinoma)
- Splenic tumors (e.g. hemangiosarcoma)
- Bone tumors (e.g. osteosarcoma)
- Soft tissue sarcomas
- Vaccine-associated sarcomas
- Mammary tumors
- Intestinal tract tumors (from mouth to anal sacs, including liver)
- Respiratory tract tumors (from nose to lungs)
- Histiocytic tumors
If you would like to have your pet evaluated by the oncology department, please contact the front desk to make an appointment. If you or your veterinarian feels that your pet is critical and cannot wait for an appointment, your pet can be admitted through the emergency service, 24 hours a day and will then be evaluated by the oncology department when they are in the hospital.
Link here to Bergen Record news: The Treatment of Canine Lymphoma
Doctors in Oncology
Stephen Brenn, DVM, DACVIM (Oncology)
Dr. Brenn received his DVM degree from the College of Veterinary Medicine at North Carolina State University. He then completed an internship at the New Haven Central Hospital for Veterinary Medicine and remained in Connecticut to live and practice general medicine. He recently completed a three year residency in oncology at the Animal Medical Center in New York City.
Dr. Brenn enjoys music, sports, and spending time with his two sons.Dennis Bailey, DVM, DACVIM (Oncology)
Dr. Bailey received his DVM from Cornell University, completed an internship at North Carolina State University, and a residency in Oncology at Cornell University. He is a Diplomate of the ACVIM in Oncology, and he spent the last two years on the clinical faculty of the College of Veterinary Medicine, Cornell University.
Dr. Bailey's professional interests include managing chemotherapy and pain management. He enjoys playing tennis and watching football. (Buffalo Bills). He has two cats, Laverne and Shirley. Dr. Bailey is a consultant for VIN (Veterinary information network).