Table 1 Characteristics of patients

Age, year

32 (22–49)

Antecedent pregnancy

 Mole

1 (7.7%)

 Abortion

4 (30.8%)

 Term

8 (61.5%)

Interval since antecedent pregnancy, month

Massive vaginal bleeding

6 (46.2%)

Pretreatment serum β-hCG, mIU/mL

23,157 (1023–239234)

 < 10³

1 (7.7%)

 10³–10⁴

4 (30.8%)

 > 10⁴

8 (61.5%)

Lesion size, cm

4.5 (1.5–6.8)

FIGO stage

 I

8 (61.5%)

 II

0

 III

4 (30.8%)

 IV

1 (7.7%)

FIGO score

 ≤ 6

4 (30.8%)

 > 7

9 (69.2%)