Vascular Cancer in Pets: What Owners Need to Know

Vascular cancer, medically known as Hemangiosarcoma, is a common and aggressive type of cancer found in pets—especially in large-breed dogs such as German Shepherds, Golden Retrievers, and Labrador Retrievers. It can also occur in cats, though less frequently. Due to its rapid progression and serious impact on a pet’s health, Erawan Animal Hospital aims to provide pet owners with essential knowledge to better understand and manage this disease.

What is Vascular Cancer?
Vascular cancer arises from endothelial cells, which line the interior of blood vessels. It often occurs in organs with rich blood supplies such as the spleen, liver, heart, or skin. This cancer is classified as a type of soft tissue sarcoma and is known for its rapid metastasis to organs like the lungs, liver, or brain, making treatment quite complex.

Symptoms to Watch For
Symptoms depend on the tumor’s location. Common signs include:

In the spleen or liver: Weakness, loss of appetite, abdominal swelling, pale gums, or shock due to internal bleeding.
In the heart: Labored breathing, fatigue, or signs of heart failure.
On the skin: Rapidly growing lumps or lesions that may bleed or ulcerate.
These symptoms may appear suddenly, especially if a tumor ruptures and causes internal bleeding. This is a medical emergency, and the pet should be brought to a veterinarian immediately.

Diagnosis
At Erawan Animal Hospital, we use advanced technology to ensure an accurate diagnosis. Diagnostic methods include:

Imaging: Ultrasound or X-rays to detect the tumor’s location and size.
Biopsy: Tissue sampling to confirm the diagnosis of hemangiosarcoma.
Blood tests: To assess overall health and detect complications such as anemia due to blood loss.

Treatment Options
Treatment depends on the cancer’s stage and the pet’s general health. Options at Erawan Animal Hospital include:

Surgery: If the tumor is operable, such as those located in the spleen or skin, removal can help prolong the pet’s life.
Chemotherapy: Often used in conjunction with surgery to control the spread of cancer.
Palliative care: For advanced cases, treatment focuses on relieving symptoms and improving the pet’s quality of life.

A Real Case Success
At Erawan Pet Hospital, we successfully treated a 7-year-old dog diagnosed with hemangiosarcoma near the spine. The tumor measured over 10 cm. Our veterinary team performed diagnostic imaging and a biopsy to confirm the cancer, followed by surgery to remove the tumor. Post-operative chemotherapy was administered to manage the disease. With close monitoring and comprehensive care, the dog was able to regain a good quality of life and spend more precious time with its family. This case highlights the importance of early detection and specialized treatment.

Prognosis
Hemangiosarcoma is a highly aggressive cancer that is often diagnosed in advanced stages, leading to a poor overall prognosis. However, early detection and proper treatment can significantly extend the pet’s lifespan and improve their quality of life.

Recommendations for Pet Owners
Regular Checkups: Routine health screenings can help detect abnormalities early.
Monitor for Symptoms: If your pet shows signs such as weakness, abdominal swelling, or breathing difficulty, seek veterinary attention immediately.
Consult a Veterinarian: If you suspect your pet is at risk, our veterinary team is here to offer guidance and personalized treatment plans.

At Erawan Pet Hospital, we understand the deep bond you share with your pets. Our team is committed to providing compassionate care using the latest medical technology to ensure your pet’s well-being. We have an Advanced Veterinary Oncology Department staffed by experienced, specially trained veterinary oncologists. Our services range from diagnosis to tailored treatment plans, including nutritional counseling and post-treatment care, all aimed at giving your beloved companion the highest quality of life possible.

Written by:
Dr. Phu Thongupakorn
Veterinarian, Advanced Veterinary Oncology Department
Erawan Pet Hospital