pregnancy hydatidiform mole abortion term months since last pregnancy less than 4 4 to 6 7-12 >12 pre-treatment hcg (iu/ml) <103 103 to 104 >104 to 105 >105 largest tumor size, including uterus <3 cm 3–4 cm ≥5 cm - site of spread lung spleen or kidney gi tract brain, liver number of metastases - 1 to 4 5-8 >8 previous failed chemotherapy - - single drug ≥2 prognosis the survival rate following treatment with chemotherapy is approximately at least 90%. if gestational choriocarcinoma has spread to the liver in an individual, survival rate may be lower. overall survival rate is also higher when management of gestational choriocarcinoma occurs in a setting with physicians familiar with the condition. earlier diagnosis and treatment intervention can lead to greater success in preserving potential of future pregnancy in those seeking it. return of human chorionic gonadotropic levels to within the bounds of normal values lowers the chance of recurring gestational choriocarcinoma. these levels can be checked monthly as follow-up. if an individual is interested in pregnancy following chemotherapy treatment for gestational choriocarcinoma, it is recommended that they wait a minimum of one year following chemotherapy before they plan to have a child to minimize the chance of miscarriage.