###Human: hCG level is high in a pregnant patient. What can it be? ###Assistant: Hi. I have gone through your history and understand your concerns. I feel sorry about your loss. It is most likely a molar pregnancy (benign tumor developing in the uterus) because hCG levels are quite high (human chorionic gonadotropin) and it is inside the uterus. Most likely a complete mole if the placenta has also involved. No need to worry, bleeding decreases when products come out and they are considered to be good signs. Sometimes, it can turn into cancer called trophoblastic disease. In your case, we have to go for a biopsy of the tissue and checkup of hCG levels after six weeks. If the levels are persistently high, then it is suggestive of cancer. Chemotherapy is quite effective in your case but the side effects of the drug could be there.