Final answer:
A tumor composed of smooth muscle is called a leiomyoma or a fibroid tumor. Smooth muscle is found in various organs of the body, such as the uterus, blood vessels, and digestive tract. When smooth muscle cells grow excessively in the uterus, it can lead to the development of fibroid tumors.
Step-by-step explanation:
A tumor composed of smooth muscle is called a leiomyoma or a fibroid tumor. Smooth muscle is found in various organs of the body, such as the uterus, blood vessels, and digestive tract. When smooth muscle cells grow excessively in the uterus, it can lead to the development of fibroid tumors.