MRCEM Notes

Breast disorders

The table below describes some of the features seen in the most common breast disorders:

DisorderFeatures
FibroadenomaCommon in women under the age of 30 years
Often described as 'breast mice' due as they are discrete, non-tender, highly mobile lumps
Fibroadenosis (fibrocystic disease, benign mammary dysplasia)Most common in middle-aged women
'Lumpy' breasts which may be painful. Symptoms may worsen prior to menstruation
Breast cancerCharacteristically a hard, irregular lump. There may be associated nipple inversion or skin tethering

Paget's disease of the breast - intraductal carcinoma associated with a reddening and thickening (may resemble eczematous changes) of the nipple/areola
Mammary duct ectasiaDilatation of the large breast ducts
Most common around the menopause
May present with a tender lump around the areola +/- a green nipple discharge
If ruptures may cause local inflammation, sometimes referred to as 'plasma cell mastitis'
Duct papillomaLocal areas of epithelial proliferation in large mammary ducts
Hyperplastic lesions rather than malignant or premalignant
May present with blood stained discharge
Fat necrosisMore common in obese women with large breasts
May follow trivial or unnoticed trauma
Initial inflammatory response, the lesion is typical firm and round but may develop into a hard, irregular breast lump
Rare and may mimic breast cancer so further investigation is always warranted
Breast abscessMore common in lactating women
Red, hot tender swelling

Lipomas and sebaceous cysts may also develop around the breast tissue.
Full-size image