Health encyclopaedia

Health encyclopaedia - Alphabetical Topic List

Breast lump

The majority, approximately 85% of breast lumps are found to be benign (i.e. non-cancerous).

There are many causes and types of benign breast lump. These include:

Fibrocystic breast disease (Fibroadenosis) is a benign growth abnormality of the breast, causing lumpiness and tenderness.  Fibrocystic breast disease is very common in pre-menopausal women.

A fibroadenoma is a small growth in the breast. They are most common between the ages of 15 and 30. These lumps are benign and are not associated with an increased risk of breast cancer.

A cyst is a fluid filled lump. Breast cysts are most common in pre-menopausal women (40-55) and those who take hormone replacement therapy at any age.

Fat necrosis is a hard irregular lump, most often caused by trauma. They disappear spontaneously.

A lipoma is a fatty growth that can cause a lump that can change the shape of the breast. It requires no treatment.

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