A 17-year-old presented with menorrhagia requiring blood transfusion and a transvaginal ultrasound demonstrated a 31 mm endometrial stripe within a bulky uterus. Endometrial curettage revealed a grade 2 endometrioid adenocarcinoma. The patient desired definitive surgical management for her disease; a stage IIIC endometrial cancer with focal low-grade serous carcinoma among a grade 2 endometrioid carcinoma was noted to be superficially myoinvasive. Multiple pelvic lymph nodes had evidence of metastatic serous adenocarcinoma. Platinum-based chemotherapy was administered, and the patient is without disease 24 months following therapy.
Advanced endometrial cancer with metastasis of serous carcinoma to the retroperitoneal lymph nodes can occur, albeit extraordinarily rarely, in very young women. This information is critically important when counseling a woman regarding conservative management of endometrial adenocarcinoma with the interest of preservation of her fertility.