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Biopsy of the vaginal mass revealed an invasive poorly differentiated squamous cell carcinoma. The patient underwent radical hysterectomy, bilateral salpingo-oophorectomy, omentectomy, pelvic lymph node dissection, peritoneal sampling and vaginal tumor resection. On the basis of her medical history, auxiliary examination and postoperative pathology, the patient was diagnosed with stage IV endometrial squamous cell carcinoma. 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