Breast Mucocele-like lesions (MLL): A case report and review of the literature

Mucocele-like lesions of the breast are rare, usually presenting themselves as suspicious findings on imaging, warranting biopsies. It can be associated with several degrees of hyperplasia, including atypical ductal hyperplasia and ductal carcinoma in situ, historically being considered a high-risk lesion. It also can be an underestimated invasive carcinoma in a percutaneous biopsy. When facing a histologic diagnosis of a mucocele-lesion in a percutaneous biopsy, it is important to be aware of these lesions' significance to make the most appropriate interpretation, recommendation, and management. The purpose of this work is to present some cases of breast mucocele-like lesions from our Institution and perform a review of the literature.