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.
Hemangiosarcoma is cancer of the endothelial cells - the cells that line blood vessels. Unlike other cancers, it is almost exclusively a disease of dogs. Dogs of any breed and age can develop hemangiosarcoma, but it is most commonly seen in dogs over the age of six, and in the following breeds: Golden Retrievers.