In adenosis, the breast lobules are enlarged, and there are more glands than usual. Adenosis is often found in breast biopsies of women who have fibrocystic changes. What cancer patients, their families, and caregivers need to know about the coronavirus. Adenosis is a benign breast condition that occurs in the lobules (milk-producing glands), causing them to become enlarged. Adenosis may cause a lump, or multiple lumps, that can be felt. If enlarged lobules are also being distorted, or pulled out of shape, by scar-like fibrous tissue, the condition is more specifically referred to as sclerosing adenosis. Adenosis of the breast is a benign lobulocentric proliferative process in which lobules are enlarged and increased in number in addition to an increased number of glands within each lobule. Sclerosing adenosis (sa) is a benign proliferative condition of the terminal duct lobular units characterized by an increased number of acini and their glands. It manifests as multiple small, firm, tender nodules, fibrous tissue, and variable microcysts within the breast. It is sometimes placed under the category of borderline breast disease. See also separate topics for each subtype apocrine adenosis adenosis with predominant apocrine cytology microglandular adenosis nonlobulocentric proliferation of mammary glands with an infiltrative pattern, lined by a single epithelial layer with a basement membrane sclerosing adenosis lobulocentric proliferation of glands (2 layers.). Adenosis of breast is a common type of breast tumor that is observed in young women. Adenosis tumour of the breast--a clinicopathological investigation of 27 cases. Author information (1)university institute of pathology, kommunehospitalet, aarhus, denmark. Twenty-seven cases of palpable andor tumour-forming adenosis in the female breast, called adenosis tumour, have been investigated. It also may show up on a mammogram as a distorted area, a mass, or calcifications, the small white calcium deposits that are sometimes associated with an underlying breast cancer. Sclerosing adenosis of the breast is manifested by nodules that outwardly resemble cancer. Palpation of the breast allows us to ascertain mobile seals, which have a clear form and increased density. Examination and mammological examination, which the specialist will do, can reveal the data of the densification, but not distinguish them from oncology. Adenosis breast any hyperplastic process that primarily involves the glands of the breast. Glandular tissue in one or more sites in which it is not usually found.