Fibroids are one of the most common benign tumors in the female reproductive organs and one of the most common tumors in the human body, also known as fibroids and uterine fibroids. Since uterine fibroids are mainly caused by the proliferation of uterine smooth muscle cells, with a small amount of fibrous connective tissue existing as a kind of supporting tissue, it is more accurate to call them uterine smooth muscle tumors. The abbreviation is uterine fibroids. So how to distinguish between uterine fibroids and uterine sarcoma? I. Difference between uterine fibroids and uterine sarcoma Uterine sarcoma is an extremely rare malignant tumor that occurs very infrequently compared to cervical cancer and uterine cancer. Uterine sarcoma is very similar to uterine fibroids and is difficult to detect by general examination. Combined with its symptoms and progression through the process, and through ultrasound, MRI, and CT scan imaging may be able to predict uterine sarcoma, but still not confirm the diagnosis. The diagnosis can only be confirmed if its tissue is examined under a microscope. Therefore its detection is almost always after surgery. Second, the way to distinguish uterine sarcoma The common types of uterine sarcoma are smooth muscle sarcoma and endometrial mesenchymal sarcoma. Regardless of the type of uterine sarcoma, they can metastasize throughout the body with the blood. If they metastasize to the lungs and become large, they can cause breathing difficulties and pose a threat to life. In general, the difference between uterine sarcoma and uterine fibroids is that uterine sarcoma grows faster than uterine fibroids. Pathological examination is required to make the final difference.