Where is visceral hemangiosarcoma most commonly located?

Visceral hemangiosarcoma is most commonly located in the spleen. This tumor originates from endothelial cells and is particularly prevalent in dogs, often affecting older individuals. The spleen is a common site because of its vascular nature and its role in filtering blood, making it susceptible to the development of vascular tumors like hemangiosarcoma.

While other organs such as the liver, pancreas, and heart (right atrium) can also be involved with hemangiosarcoma, the spleen is by far the most frequent location identified in clinical cases. In fact, splenic hemangiosarcoma is often detected during diagnostic imaging or surgery and can lead to significant clinical signs due to splenic rupture and subsequent internal bleeding, making prompt recognition and treatment vital for affected animals. Understanding this typical localization helps veterinarians in both the diagnosis and management of these tumors.