When endometrial polyps in women undergo malignant transformation, it can lead to a large amount of vaginal discharge. This discharge may be accompanied by a foul odor, which could possibly be due to an associated infection. Additionally, when endometrial polyps undergo malignant transformation and form tumors, their growth rate accelerates, and the blood supply may not meet the growth needs of the polyps. This may lead to localized ulceration and bleeding, causing women to experience irregular vaginal bleeding. This bleeding can manifest as blood streaks in vaginal discharge or as persistent vaginal bleeding. As the tumor gradually enlarges, it increases the pressure in the uterine cavity, leading to abdominal pain in some women.