A 41-year-old G5, P5 woman has noticed lower abdominal pain with fever for the past 2 days. She delivered a normal term infant 1 week ago. On examination, she has a temperature of 37.4degC. There is a foul-smelling vaginal discharge. Which of the following pathologic findings is she most likely to have?
Cervical intraepithelial neoplasia Endometrial neutrophilic infiltrates Myometrial smooth muscle neoplasm Ovarian endometrioma