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.
1 1Skin tumors can be benign or malignant, but they should always be checked by a veterinarian. 2  2Some skin problems, such as allergies or fungal infections, can be mistaken for tumors.  3Common tumors in dogs include mast cell, basal cell, melanoma, squamous cell carcinoma, and hemanglosarcoma.