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.
Causes of Retinal Hemorrhage in Dogs. 1  Some congenital deformities of the eye predispose the retina to bleeding in the dog, particularly if the defects involve the retinal blood vessels or areas adjacent to the blood vessels. 2  Circulatory disorders that affect blood vessels may also cause retinal hemorrhages. Examples include high blood pressure (hypertension), too much circulating protein in the blood (hyperviscosity syndrome), weakening of the blood vessels from kidney or adrenal gland disease, and sugar diabetes.