Figure 1

Transvaginal ultrasonography of the patient before (A) and after (B) dilation and curettage (D&C). The uterine cavity and cervical canal were empty. A mass implanted in the anterior wall of the uterine Caesarean scar (indicated by the arrow) embedded and surrounded by thin myometrium and separated from the endometrial cavity was visible on the retroverted uterus. Ultrasonography revealed that the mass was heterogeneous with a mixture of cystic and solid echogenicity. (A) Two days before D&C (longitudinal section). The size of the mass was 6.6 × 5.6 × 5.5 cm. RI = 0.38. (B) Five days after D&C (longitudinal section). The size of the mass was 4.7 × 5.7 × 4.5 cm. Abundant blood flow signals and low RI around the mass, RI = 0.29.