The most common clinical finding with hemangiosarcoma is anemia.

• A. Anemia
• B. Pain
• C. Lump
• D. Nausea

Answer: (A)

Hemangiosarcoma is a malignant tumor of blood vessels, so its vessels are fragile and prone to rupture and bleeding. The most common clinical finding is anemia because ongoing or sudden blood loss from tumor hemorrhage reduces the circulating red blood cell mass. This can manifest as pallor, fatigue, and tachycardia. While a palpable mass or localized pain can occur if the tumor is sizeable, they are less consistently present than anemia. Nausea is not a typical direct feature. In imaging, you might see a heterogeneous, vascular mass with signs of internal hemorrhage, but the key clinical clue remains anemia from hemorrhage.