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The most common synchronous gynecologic malignancies are endometrial and ovarian cancers. However, synchronous endometrial adenocarcinoma and uterine leiomyosarcoma are extremely rare. We report the case of a 50-yr-old woman who was diagnosed with concomitant endometrial adenocarcinoma and uterine leiomyosarcoma. The sarcomatous neoplasm was positive for anti-smooth muscle actin and CD10, and focally positive for Cytokeratin AE1/AE3 and Cytokeratin Cam 5.2. She underwent total abdominal hysterectomy with bilateral salpingoopherectomy followed by radiation, brachytherapy, and chemotherapy. Three years later, she presented with cough and dyspnea and was found to have pulmonary metastasis. These tumor cells were positive for anti-smooth muscle actin, Cytokeratin AE1/AE3, Cytokeratin Cam 5.2, and epithelial membrane antigen, and therefore a diagnosis of lung metastasis from myometrial leiomyosarcoma was made. She received chemotherapy postoperatively. Currently, the patient has multiple lung metastases, is on Megestrol Acetate and is clinically well. This is the first reported case of concomitant uterine malignancies with pulmonary metastases and a long follow-up of 9 yr. It is important to rule out carcinosarcoma as a differential diagnosis in such patients.


Alizeh Abbas, Nasir Ud Din, Naila Kayani. Synchronous Well-differentiated Endometrioid Adenocarcinoma and Leiomyosarcoma of the Uterus With Pulmonary Metastasis in a 50-Yr-Old Woman: A Case Report and Review of Literature. International journal of gynecological pathology : official journal of the International Society of Gynecological Pathologists. 2020 Jul;39(4):373-378

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PMID: 31157684

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