👉 Myxoma is a type of benign tumor that occurs in the blood vessels, especially the blood vessels in the brain. It's usually caused by an infection with a virus or bacteria, and it can grow into the walls of the blood vessels, leading to swelling and pain. Myxomas are often found in the corners of the head, but they can also occur elsewhere in the body. They're not typically life-threatening, but they can cause discomfort or even lead to serious complications if left untreated