Angiosarcomas are a rare type of cancer that originates in the blood vessels or lymphatic vessels. They can occur in various parts of the body, including the skin, breast, liver, and heart. This aggressive cancer often appears as a mass or lesion and can spread quickly to other tissues. Diagnosis typically involves imaging tests and a biopsy to confirm the presence of cancerous cells. Treatment options may include surgery, radiation therapy, and chemotherapy, depending on the tumor's location and stage. Early detection is crucial for improving outcomes in patients with angiosarcomas.