Benign breast lesions

Question 1

Fibroadenoma

Answer 1

Benign breast tumour consisting of stromal and epithelial cells
- Young women
- Well-defined mobile mass

Question 2

Fibrocytic disease

Answer 2

Spectrum of conditions causing fibrous and/or cystic change within the breast
- Often benign
- Can increase risk of cancer if the lesion consists of epithelial hyperplasia

Question 3

Intraductal papilloma

Answer 3

Benign tumour of the breast ducts
- Classically presents as bloody nipple discharge in a premenopausal women

Question 4

Phyllodes tumour

Answer 4

Fibroepithelial tumour similar to fibroadenoma which is usually benign but can be malignant
- Characteristic LEAF-LIKE architecture on histology

Question 5

Fat necrosis

Answer 5

Inflammation of adipose tissue often as a result of trauma

Question 6

Mammary duct ectasia

Answer 6

Chronic inflammation and dilatation of subareolar ducts due to stasis of secretions
- Periareolar mass with green/brown nipple discharge in a postmenopausal woman