- AKA “breast mouse” because they are small and mobile
- Benign tumours of stromal/epithelial breast duct tissue
- Common in younger patients (<40 years).
- A smooth, well circumscribed, firm, mobile lump.
- Usually up to 3cm.
- Hormone dependent, and regress after menopause.
- 10% disappear every year.
Fibrocystic Breast Disease (Fibroadenosis)
- Common in women of menstruating age
- Related to hormonal changes around menstrual cycle
- Symptoms often occur prior to menstruating (within 10 days) and resolve after wards
- Benign condition, although can vary in severity and have an effect on quality of life if severe
- Usually resolves after menopause
- Bilateral breast lumpiness
- Bilateral breast pain / tenderness (mastalgia)
- Fluctuation of breast size
- Supportive Clothing
- Weight Loss
- Hormonal contraception may make it worse (consider stopping)
- A discrete collection of fluid in the breast tissue
- Most common between ages 30-60.
- A smooth, well circumscribed, mobile, possibly fluctuant lump
- Can fluctuate in size over the menstrual cycle
- Treat conservatively, with needle aspiration or local excision
- An acute(usually bacterial) infection of the breast tissue
- May be associated with fever, pus discharge from the nipple and local erythema, tenderness and heat
- Treat with antibiotics. May require incision and drainage surgically.
- A lump formed by local degeneration / scarring of fat tissue
- This is an inflammatory reaction resulting in fibrosis and eventually necrosis
- Commonly caused by local trauma or breast surgery
- A firm, irregular, fixed lump. May cause skin dimpling or nipple inversion.
- Radiologically similar appearance to breast cancer
- Can be associated with an oil cyst, containing emulsified fat
- Benign condition
- May resolve spontaneously
- Treat conservatively or with surgical excision
- A benign collection of fat
- A soft, painless and mobile lump up to 20cm in size
- Treat conservatively with reassurance or with surgical excision
- Large, fast growing periductal stromal cell neoplasm.
- Most common between age 40-50.
- Can be benign (~50%), borderline (~25%) or malignant (~25%)
- 1% of breast neoplasms.
- Requires local excision.
- May be hard, irregular, painless, fixed lesions
- May be tethered to the skin or the chest wall
- May cause nipple retraction
- May cause skin dimpling or oedema (peau d’orange)
Two Week Wait Referral Criteria (Urgent Cancer Referrals)
- A discrete lump with fixation, that enlarges and/or with any concerns (e.g. family history)
- Women over 30 with a persistent breast or axillary lump or focal lumpiness after their menstrual period
- Previous breast cancer with new suspicious symptoms
- Skin or nipple changes suggestive of breast cancer
- Unilateral bloody nipple discharge