Intravascular large B-cell lymphoma of the uterus: a diagnostic challenge.

A 63-year-old woman presented with postmenopausal bleeding. The initial curettage material was reported as "undifferentiated malignant tumor." A total abdominal hysterectomy with bilateral salpingo-oophorectomy was performed with pelvic lymph node dissection and omental biopsy, which showed an intravascular large B-cell lymphoma in the lumina of small blood vessels of the uterus, left tube, and right ovary. This is the first reported case of an intravascular lymphoma of the uterus.