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Usual ductal hyperplasia (UDH) is a benign lesion of the breast wherein cells look very similar to normal. It is a spectrum of changes that can range from minimal stratification of cells to proliferations that are just short of atypical ductal hyperplasia .
Tubular carcinoma is a subtype of invasive ductal carcinoma of the breast. [2] [3] More rarely, tubular carcinomas may arise in the pancreas [4] or kidney. [5] Most tubular carcinomas begin in the milk duct of the breast and spread to healthy tissue around it. [6] [7]
For breast pathology, also in distinguishing usual ductal hyperplasia (UDH) and papillary lesions (having a mosaic-like pattern) from ductal carcinoma in situ, which is usually negative. [1] Cyclin D1 and CK5/6 staining could be used in concert to distinguish between the diagnosis of papilloma (Cyclin D1 < 4.20%, CK 5/6 positive) or papillary ...
Comedocarcinoma is a kind of breast cancer that demonstrates comedonecrosis, which is the central necrosis [1] of cancer cells within involved ducts. Comedocarcinomas are usually non-infiltrating and intraductal tumors, characterized as a comedo-type, high-grade ductal carcinoma in situ (DCIS).
Mucinous carcinoma of the breast is a form of mucinous carcinoma and a breast cancer type. It is a rare form of breast cancer that accounts for 2% of breast carcinomas and most commonly occurs in postmenopausal women over 70 years old. [2] Rare cases of this carcinoma have been diagnosed in men (see male breast cancer). [3]
Atypical ductal hyperplasia (ADH) is the term used for a benign lesion of the breast that indicates an increased risk of breast cancer. [1]The name of the entity is descriptive of the lesion; ADH is characterized by cellular proliferation (hyperplasia) within one or two breast ducts and (histomorphologic) architectural abnormalities, i.e. the cells are arranged in an abnormal or atypical way ...
The basal-like carcinoma is a recently proposed subtype of breast cancer defined by its gene expression and protein expression profile. [1]Breast cancer can be divided into five molecular subtypes, including luminal subtype A, luminal subtype B, normal breast-like subtype, HER-2 overexpression subtype, and basal-like subtype. [2]
In a review study of 190 individuals diagnosed with MSC, patient ages ranged from 2 to 96 years (median age: 56 years); 5% of cases were aged less than 21 years; the male to female ratio was 1 to 30; the tumors were in the left, right, and both breasts in 103, 85 and 2 cases, respectively; and the tumors were usually located on a breast's left, outer quadrant. [1]