A case of female adnexal tumor of probable Wolffian origin: histologically, tumor cells showed three different patterns.

We report a 63-year-old woman with a female adnexal tumor of probable Wolffian origin, which arose within the leaves of the broad ligament, connected to the left ovary and the fallopian tube. She remains alive without evidence of disease 2 years after left salpingo-oophorectomy without subsequent adjuvant therapy. Microscopically, tumor cells were arranged in three different patterns; closely packed tubules, solid, and sieve-like. Cells had uniform round or oval nuclei and mitoses were rare. Although the majority of these tumors are benign, a few cases have shown malignant potential. Therefore, such tumors should receive careful follow-up for possible recurrence and/or metastasis.