Main disease categories

                Inflammatory/Infectious

                Traumatic

                Benign epithelial lesions

• Arise from TDLU, some have increased risk of malignancy
• These are subdivided into Proliferative vs Non-proliferative lesions; with or without atypia

                Neoplasms

• Benign vs Malignant (in-situ vs invasive)
• Which component do they arise from - epithelium or stroma?
• These are often picked up early because of our National Breast Screening Programme

                Developmental disorders

                Hormone related conditions (eg. gynaecomastia in males)