Primary ovarian non-Hodgkin's lymphoma.

A 53-year-old woman visited the department of obstetrics and gynaecology in our hospital in March 2012 with a 1-month history of left lower quadrant pain. Contrast-enhanced CT showed a heterogeneous mass, measuring 6×11 cm in diameter, in the area of the left uterine adnexa and multiple lymph nodes along the left ureter. Fluorodeoxyglucose-positron emission tomography (FDG-PET)/CT showed very high metabolic activity in the ovarian mass and enlarged lymph nodes along the ovarian vein and left ureter (figure 1). Laboratory examination revealed elevated serum levels of lactate dehydrogenase (LDH; 346 U/mL) and slightly elevated levels of carbohydrate antigen 125 (68.0 U/mL). Preoperative diagnosis …