Grades K â 12 | Student Interactive | Organizing & Summarizing. Story Map. The Story Map interactive is designed to assist students in prewriting and postreading activities by focusing on the key elements of character, setting, conflict, and resolution.
With hemangiosarcoma, the pericardium fills up with blood due to rupture of the tumor. When the tumor occurs in the skin, a mass or lump can usually be felt in or under the skin. The mass may become ulcerated and bleed. When the tumor occurs in a bone, it can cause pain and discomfort.
The causes of hemangiosarcoma that develops inside a dogâs body, such as in or around the spleen, liver, heart and bones, remain a medical mystery. However, the fact that certain breeds and sizes of dogs are predisposed to developing hemangiosarcoma strongly suggests that there is a genetic component to its cause.