👉 Endotheliomas are a group of tumors that occur primarily in the lining of blood vessels, particularly within the walls of capillaries. These tumors can be benign or malignant and can range from small nodular masses to more extensive tumors with a characteristic angiogenic pattern. Endothelial cells play an important role in the formation and maintenance of blood vessels by producing various substances such as platelets, fibroblasts, and leukocytes that are involved in the flow and regulation of blood flow.
