What should you know about invasive molar pregnancy?

Gestational trophoblastic disease develops from cells that normally help form the placenta. After a molar pregnancy, some abnormal tissue can remain and grow into the uterine wall; this is called an invasive mole. It is not caused by anything the pregnant person did. The condition is distinct from an ordinary miscarriage and needs follow-up by a specialist team.

The team follows human chorionic gonadotropin, or hCG, in blood tests because its pattern helps show whether active tissue remains. Ultrasound and other assessment may be used when needed. Bleeding between periods or ongoing vaginal bleeding can occur, but bleeding has many possible causes.

Keep every follow-up appointment and use contraception exactly as advised while hCG is being monitored, because a new pregnancy can make the blood-test pattern difficult to interpret. If active disease persists or is considered higher risk, chemotherapy may be recommended. The oncology team will explain the medicine, treatment schedule, effects on fertility and when pregnancy can be considered again.

Get urgent help for heavy vaginal bleeding, fainting, severe pelvic or abdominal pain, shortness of breath, chest pain or sudden severe headache. Contact the specialist team promptly for fever, worsening bleeding, persistent vomiting or any new symptom during chemotherapy.

Ask how the hCG trend is being interpreted, how long monitoring is expected to continue, whether imaging is needed, why chemotherapy is recommended or not, which side effects require a same-day call, what contraception is suitable, and how future pregnancy planning will be supported.