Geatational Trophoblastic Neoplasia
Geatational Trophoblastic Neoplasia
Gestational Trophoblastic Neoplasia (GTN) is a group of rare tumors that originate from abnormal growth of trophoblastic tissue, which is part of the placenta during pregnancy. These tumors can develop after any type of pregnancy, including normal pregnancies, molar pregnancies (hydatidiform mole), miscarriages, or ectopic pregnancies.
GTN includes several different diseases, such as invasive mole, choriocarcinoma, placental-site trophoblastic tumor, and epithelioid trophoblastic tumor. The most common type is choriocarcinoma, which is highly malignant but responds well to chemotherapy.
The cause of GTN is abnormal proliferation of trophoblastic cells that normally help implant the embryo in the uterine wall and support fetal development. In GTN, these cells grow uncontrollably, invading the uterine muscle and sometimes spreading to other organs like the lungs, brain, or liver.
Symptoms often include irregular vaginal bleeding, an enlarged uterus, and elevated levels of the hormone beta-human chorionic gonadotropin (β-hCG), which is produced by trophoblastic cells. Persistent high or rising β-hCG after pregnancy is a key sign prompting further investigation.
Diagnosis typically involves measuring serum β-hCG levels, pelvic ultrasound, and sometimes imaging studies like chest X-rays or CT scans to check for metastasis. Histopathological examination confirms the diagnosis.
Treatment depends on the type and stage of GTN but usually involves chemotherapy, which has a very high cure rate, especially when detected early. Surgery may be necessary in some cases, particularly if the tumor does not respond to chemotherapy or causes significant bleeding.
