Prognostic factors in choriocarcinoma

• Age / Parity - 
  worse if > 39 years and > Para 4

• Antecedent pregnancy - 
  worse after full term pregnancy / spontaneous miscarriage, better after known molar pregnancy

• Interval between pregnancy and chemotherapy - 
  better if < 4 months, worse if > 12 months

• Blood group - 
  better in blood groups O and A, worse in blood groups B and AB

• HCG levels - 
  better if < 100,000IU, worse if > 100,000IU

• Presence of metastases - 
  better if none, worse if brain, better if 1-3 metastases, worse if >3 metastases

• Largest tumour mass - 
  better if <3cm, worse if >5cm