Adenohibernoma: a rare breast tumor.

Adenohibernoma of the breast is a very rare tumor composed of brown fat tissue and intermingled glandular tissue. There are only 2 case reports in literature. This study reports the third case of adenohibernoma of the breast, which is not accompanied by breast cancer differing from the previous cases. And, to the best of the authors' knowledge, this is also the first case of adenohibernoma of the breast that has demonstrated adipophilin expression immunohistochemically.