A<unk>  is usually diagnosed through clinical examination, ultrasound or mammography, and often a biopsy sample of the lump. Suspicious findings on imaging may result in a person needing a biopsy in order to gain a definitive diagnosis. There are three types of biopsies: Fine-needle aspiration, core-needle biopsy and surgical biopsy. The method of biopsy depends on the appearance, size and location of the breast mass. Image:Breast_fibradenoma_(2).Fibroadenoma Histology (H&E). The image demonstrates intracanalicular morphology (top right) and pericanalicular morphology (bottom left) Image:Breast_fibroadenoma_by_fine_needle_aspiration_(1)_DG_stain.Fibroadenoma, Fine Needle Aspiration Biopsy (Giemsa or DiffQuick stain). The image shows abundant bare bipolar stromal nuclei surrounding sheets of metachromatic epithelial cells. Image:Breast_fibroadenoma_by_fine_needle_aspiration_(2)_PAP_stain.Fibroadenoma, Fine Needle Aspiration Biopsy (Papanicolou stain). The image shows a sheet of epithelial cells in the typical antler pattern. Image:Breast<unk>  (1).Histopathologic image of breast<unk> . Core needle biopsy. Hematoxylin & eosin stain. Image:Fibroadenoma_10X.Histopathologic image of breast<unk>  showing proliferation of intralobular stroma compressing and distorting the epithelium. H&E stain. File:Fibroadenom.Fibroadenoma in ultrasound File:Breast_US_Fibroadenoma_0531092019656_Nevit.
Fibroadenoma
Phyllodes tumor
Intraductal papilloma
Ductal carcinoma in situ
Carcinoma ex pleomorphic adenoma
Invasive lobular carcinoma
Atypical ductal hyperplasia
Lobular carcinoma in situ