LAUSR

Abstract Rationale: Extra osseous Ewing sarcoma (ES), an uncommon malignant neoplasm, accounts for about 15% of Ewing sarcoma, which mainly affects paravertebral region, lower extremity, chest wall, retroperitoneum, pelvis, and hip. Here is a 54-year-old woman of primary vaginal Ewing sarcoma with uterine fibroid, which has been fewly known or reported. Patient concerns: The patient was admitted to our hospital because of vaginal pain. Her uterus showed as parallel position and enlarged as about 3 months of pregnancy size. Diagnosis: Magnetic resonance imaging (MRI) and ultrasonography (US) demonstrated 2 heterogeneous masses in the vagina and uterus, respectively. Ultrasound-guided puncture biopsy revealed a malignant tumor in the right lateral vaginal wall. Interventions: The patient was treated by hysterectomy, bilateral salpingo-oophorectomy, and tumors excision, with the subsequent treatment of chemotherapy. Outcomes: The patient recovered well without local recurrence for >1 year. Lessons: Primary vaginal Ewing sarcoma is extremely rare. The treatments of uterine fibroid include uterine artery embolization and surgical options, While wide local excision followed by adjuvant chemotherapy and/or radiotherapy should be recommended for the vaginal ES.