http://www.merlot.org:80/merlot/ A search of MERLOT materials Copyright 1997-2013 MERLOT. All rights reserved. Sat, 25 May 2013 14:56:06 PDT Sat, 25 May 2013 14:56:06 PDT http://www.merlot.org:80/merlot/images/merlot.gif http://www.merlot.org:80/merlot/ 44 34 http://www.merlot.org/merlot/viewMaterial.htm?id=515106 A gestational trophoblastic tumor (GTT) is a rare cancer that occurs in women. A GTT is most commonly the result of an abnormal pregnancy due to an abnormal combination of a sperm and an egg. In other cases, a GTT is a cancerous growth that begins from a normal placenta (the organ that develops during pregnancy and connects the fetus [unborn baby] to the uterus). There are three types of GTT: (1) Hydatidiform mole, (2) Choriocarcinoma, and (3) Placental-site trophoblastic disease. This section of Cancer.Net on GTT includes statistics, risk factors, prevention methods, symptoms, diagnosis,staging, treatment options, clinical trial information, and questions patients should discuss with a doctor. http://www.merlot.org/merlot/viewMaterial.htm?id=515068 This webpage focuses on Gestational Trophoblastic Tumor. There is a definition of the term, an overview, and links for treatment, clinical trials, cancer literature, research and related information, and statistics concerning carcinoma of unknown primary. A gestational trophoblastic tumor is any of a group of tumors that develops from trophoblastic cells (cells that help an embryo attach to the uterus and help form the placenta) after fertilization of an egg by a sperm.