Fibrocystic breast change, a common benign breast condition in women of reproductive age, typically presents with cyclic breast pain and palpable lumps, characterised histologically by fibrosis and cystic changes, and exhibits clustered microcysts on a background of dense, heterogeneous breast tissue with scattered fibroglandular densities.
Description
Fibrocystic breast change, is a benign and common condition characterised by changes in breast tissue that can cause lumpiness, discomfort, breast cysts, and fibrosis.
Pathogenesis
The condition is thought to be linked to hormonal variations during the menstrual cycle. It manifests as an overgrowth of fibrous tissue, alongside the development of fluid-filled cysts in the breast.
Epidemiology, Risk Factors & Associations
- Most common in women of reproductive age (20-50 years)
- Hormonal influences: It is related to the hormonal changes that happen during a woman’s menstrual cycle.
- No significant associations with increased risk of breast cancer
Clinical Features
Symptoms can vary throughout the menstrual cycle, but often include:
- Breast lumps or areas of thickening that tend to blend into the surrounding breast tissue
- Generalised breast pain or tenderness
- Fluctuating size of breast lumps
- Green or dark brown nonbloody nipple discharge
Complications
While fibrocystic breast disease itself doesn’t increase breast cancer risk, complex fibrocystic changes can make breast cancer detection more challenging.
Pathological Features
Histopathology
- Macroscopic: Variable, breasts may be firm and nodular to palpation.
- Microscopic: Presence of fibrosis, cysts, sclerosing adenosis, apocrine metaplasia, calcification, inflammation and epithelial hyperplasia.
Radiological Features
General Features
- Characteristically demonstrates a lumpy, cobblestone texture on palpation and imaging.
Mammography
- Dense, fibroglandular tissue
- Fluctuating pattern of cysts
- Scattered diffuse, randomly grouped punctate, amorphous calcification
- Milk of calcium may also be seen
Ultrasound
- Heterogeneous, often hyperechoic breast tissue
- Round or oval, anechoic or hypoechoic, well-circumscribed clustered microcysts, or complex cystic and solid mass
MRI
- T2WI: Cysts
- T1 FS Gd+: Rim-enhancing inflamed cysts; scattered foci, focal or regional non-mass parenchymal enhancement
Grading and Staging
Fibrocystic breast disease is not a malignancy, so it does not have a formal grading or staging system.
Diagnosis
The diagnosis is usually clinical, based on characteristic symptoms and physical findings. Imaging studies and, if needed, fine-needle aspiration or biopsy can help confirm the diagnosis and rule out breast cancer.
Differential Diagnosis
- Atypical ductal hyperplasia (ADH), lobular neoplasia
- DCIS
- Breast abscess or mastitis: These conditions are often associated with redness and tenderness of the breast, often in the setting of breastfeeding.
Management
Management is largely supportive and aimed at symptom control. This can include wearing a supportive bra, taking over-the-counter pain relievers, and reducing caffeine intake. Hormonal birth control may also help regulate hormonal fluctuations that exacerbate fibrocystic breast changes.