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Table 1 Follow-up of hydatidiform moles modified from Ka Yu Tse et al. (Obstetrics, Gynaecology and Reproductive Medicine, 2015 39).
| CHM | PHM | |
|---|---|---|
| Duration of serum/urine β-hCG controls | 1 year | 3–6 months |
| Frequency of β-hCG measurement | weekly until 3 × negative, then monthly | weekly until 2–3 × negative, then monthly |
| Prophylactic chemotherapy | no | no |
| Risk of subsequent GTD | 1–2 % following one previous mole15–18 % following two previous moles | |
| Chance for GTN | 15–20 % | 0.5–2 % |
