Final answer:
Noncancerous tumors in the myometrium of the uterus are called uterine fibroids. They are benign neoplasms that typically don't threaten life but may require monitoring or surgical removal due to discomfort or potential health risks.
Step-by-step explanation:
Noncancerous tumors in the myometrium of the uterus are called uterine fibroids. The myometrium is the middle layer of the uterus, consisting primarily of a thick layer of smooth muscle. Uterine fibroids, also known as myomas, are benign neoplasms that typically stop growing on their own, do not invade other tissues, and do not form metastases. However, they can cause discomfort or other symptoms which is why they are sometimes surgically removed. It's also important to monitor them as cells in some benign tumors may have the potential to become cancerous. Even though these growths are not life-threatening, their presence can impact a woman's quality of life and reproductive health.