Macroscopic features of a coexisting epithelioid trophoblastic tumor (ETT) and placental site trophoblastic tumor (PSTT) at the cesarean section site. (A) An irregular, plaque-like, soft, brown tumor centered at the previous cesarean section site (arrow). Adenomyosis with thickened myometrium was noted in the myometrium (arrowhead). (B) Tumor invasion into the myometrium of the lower uterine segment (arrow). The uterine corpus and cervix are on the right and left, respectively.