Benign schwannoma of the breast: report of a case.

We report herein the case of a 62-year-old woman who presented to our hospital for investigation of occasional pain in her left breast. Although there was no mass palpable in her left breast, mammography and ultrasonography revealed a round tumor in the upper outer quadrant of the right breast. Although the mammography findings indicated that the tumor was benign, the possibility of a malignant neoplasm could not be ruled out by the ultrasonographic images. A final diagnosis of schwannoma was established by histopathological examination of the excised mass.