Twin molar pregnancy with a coexisting live fetus

One pregnancy sac or placental tissue has molar changes, while the other fetus may be developing. Molar tissue can produce unusually high levels of pregnancy hormone and may cause bleeding, severe nausea, rapid uterine growth or symptoms of an overactive thyroid. These symptoms can also occur for other reasons, so the diagnosis depends on ultrasound findings, examination and hormone testing.

The pregnancy needs care from an obstetric team familiar with high-risk pregnancy and gestational trophoblastic disease. The team considers the fetus's development, the molar tissue, your health and the risks of continuing the pregnancy.

Arrange prompt review with your obstetrician or a specialist centre. Keep every ultrasound and hormone-test appointment, and tell the team about bleeding, vomiting, pain, breathlessness, palpitations or severe headaches. Do not start medicines or supplements without checking whether they are suitable in pregnancy.

Your clinicians may discuss monitoring, delivery planning and what happens after the pregnancy. If molar tissue remains or behaves persistently, treatment can include chemotherapy; this is decided from follow-up results and your individual situation.

Seek emergency help for heavy vaginal bleeding, fainting, severe abdominal pain, chest pain, difficulty breathing, confusion, a seizure, or a severe headache with vision changes. Contact your maternity team urgently for reduced fetal movement once you have been advised how to monitor it, repeated vomiting with inability to keep fluids down, or new marked swelling.

Ask which findings confirm molar tissue, how the fetus is developing, how often you need scans and hormone tests, what symptoms require immediate help, and how delivery and post-pregnancy monitoring will be coordinated.