What is gigantomastia?

Gigantomastia is a rare condition characterized by excessive breast growth. It may occur spontaneously, during puberty or pregnancy, or while taking certain medications. There is no universally accepted definition of gigantomastia, but the majority of medical articles refer to a particular weight of excess breast tissue. Symptoms of gigantomastic may include mastalgia (breast pain), ulceration/infection, posture problems, back pain and chronic traction injury to 4th/5th/6th intercostal nerves with resultant loss of nipple sensation. It is also associated with decreased fetal growth, if it occurs during pregnancy.

The exact cause of gigantomastia is not known; however, hormonal and hereditary factors may be involved. Additionally, gigantomastia has been noted as a side effect of treatment with certain medications, such as like D-penicillamine. Treatment may include breast reduction, mastectomy with or without reconstruction, hormonal treatment, or a combination of treatments.

Last updated on 05-01-20

How might gigantomastia be treated?

Breast reduction with or without hormonal therapy is often the first line of treatment for women who have gigantomastia. However, recurrence of gigantomastia may occur, requiring a second breast reduction procedure or mastectomy. Mastectomy might be recommended following recurrence of gigantomastia after breast reduction, especially in those patients who have gigantomastia associated with puberty or pregnancy. It is important to discuss this information with a health care provider in order to determine what treatment might be appropriate.

Last updated on 05-01-20

Name: La Leche League International P.O. Box 4079
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Phone: 847-519-7730 TTY: 847-592-7570 Toll Free: 800-LALECHE (525-3243) Fax : 847-969-0460 Email: Url:

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