RT Journal Article SR Electronic T1 Diagnosis and management of a metastatic mixed gestational trophoblastic neoplasia with synchronous primary lung cancer JF BMJ Case Reports JO BMJ Case Reports FD BMJ Publishing Group Ltd SP e240606 DO 10.1136/bcr-2020-240606 VO 14 IS 5 A1 Iyengar, Varun A1 Mistry, Hetal A1 Hibbitt, Catherine A1 Shimanovsky, Alexei YR 2021 UL http://casereports.bmj.com/content/14/5/e240606.abstract AB Mixed gestational trophoblastic neoplasias (GTNs) are rare placental tumours that arise from abnormal fertilisation events. To date, only 34 patients with mixed GTNs have been reported in the literature. As such, the management of such cases remains challenging. This report presents a case of a mixed GTN that was further complicated by a synchronous primary lung adenocarcinoma. Our patient was initially treated with hysterectomy, with surveillance labwork showing persistence of her malignancy. She then began combination chemotherapy, at the end of which she appeared to be in remission clinically. Unfortunately, subsequent imaging showed the persistence of pulmonary nodules that were ultimately resected, demonstrating a new primary lung adenocarcinoma. At present, she remains free of both cancers 2 years after her initial diagnosis. The complexity of this case underscores the importance of patient-centred treatment for rare tumours and the role of a multidisciplinary team in the effort to provide holistic care.