👉 Fibromyoma is a type of tumor that arises from nerve cells in the brain. It's usually benign, but it can sometimes be cancerous if the tumor grows too quickly or becomes so large that it affects blood flow to important parts of the brain. In some cases, fibromyoma surgery may need to be done because it's growing too fast and causing significant pain or difficulty with daily activities. This is called a fibromyomaectomy.