3.1.2 Classification for Human Breast Disease

Benign Conditions of the Breast:

• Fibroadenoma
• Papilloma
• Fibrocystic Change
• Apocrine Cysts
• Blunt Duct Adenosis/Columnar Alteration

Proliferative Disease of the Breast (Slight to Moderately Increased Risk)

• Sclerosing Adenosis
• Usual Hyperplasia
  • Mild to Moderate Ductal Hyperplasia
  • Florid Ductal Hyperplasia
• Atypical Hyperplasia
• Atypical Ductal Hyperplasia
• Atypical Lobular Hyperplasia

Breast Cancers:

• Ductal Carcinoma in situ
  • Overview
  • Solid
  • Comedo
  • Cribriform
  • Micropapillary
• Lobular Carcinoma in situ
• Well Differentiated Carcinoma (No Specific Type)
• Poorly Differentiated Carcinoma (No Specific Type)
• Medullary Carcinoma
• Tubular Carcinoma
• Mucinous Carcinoma
• Carcinoma with Squamous Differentiation
• Lobular Carcinoma
• Papillary Carcinoma