Uterine stump leiomyosarcoma after sub-total hysterectomy: a case report

Abstract

Introduction: Uterine sarcomas considered as one of the aggressive tumors of uterine malignancies. It is one of the mesenchymal tumors that originate from smooth muscle of the uterus which is a rare tumor that accounts for 2% to 5% of all uterine malignancies. Very few cases are reported in the literature. Our patient has a unique history of Pelvic-Abdominal swelling reaching xiphisternum level after subtotal hysterectomy one year ago. Abnormal genital bleeding not responding to medical treatment is the usual presentation in uterine sarcoma like in our patient. We report an original case report of an abnormal sequence of this rare tumor arising from the uterine stump after subtotal hysterectomy. Case presentation: A 42-year-old nulliparous woman presented to our gyne-oncology unit in El-Galaa Maternity Teaching Hospital in June 2020 with a significant rapid increase in abdominal circumference, symptoms caused by abdominal pressure (vomiting and constipation) and abnormal genital bleeding after laparotomic sub-total hysterectomy one year ago. Tumor marker CA-125 was raised, LDH was raised and a MRI scan showed a huge mass arising from the pelvis. An exploratory laparotomy was performed and the histopathology report confirmed the diagnosis of uterine leiomyosarcoma weighing around 22kg. Conclusion: Because of their rarity, uterine sarcomas are not suitable for screening. Diagnosis by histopathologic examination and surgery is the only treatment. Pre-operative MRI with contrast for abdomen and pelvis is highly recommended to exclude abdomen metastatic sarcoma if the tumor is confined to the pelvis only.