RT Book, Section A1 Brown, Jubilee A2 Kantarjian, Hagop M. A2 Wolff, Robert A. SR Print(0) ID 1126744229 T1 Gestational Trophoblastic Disease T2 The MD Anderson Manual of Medical Oncology, 3e YR 2016 FD 2016 PB McGraw-Hill Medical PP New York, NY SN 9780071847940 LK hemonc.mhmedical.com/content.aspx?aid=1126744229 RD 2024/04/18 AB Gestational trophoblastic disease (GTD) comprises a wide spectrum of neoplastic disorders that arise from placental trophoblastic tissue after abnormal fertilization (Fig. 34-1). The spectrum includes benign disease (complete and partial hydatidiform moles) and malignant gestational trophoblastic neoplasia (GTN), which includes choriocarcinoma, placental site trophoblastic tumor (PSTT), and epithelioid trophoblastic tumor (ETT) (1). Invasive moles may also occur and are best categorized as malignant, since they can metastasize. Gestational trophoblastic neoplasia is also described as gestational trophoblastic tumor (GTT) and is further designated as nonmetastatic or metastatic (2).