Accessory breast tissue

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[edit] Discussion of Accessory breast tissue

  • Accessory breast tissue can present as a mass anywhere along the course of the embryologic mammary streak (axilla to the inguinal region).
  • Found in 2–6% of women
  • Most frequently found in the axilla.
  • This tissue ranges from a small focus of parenchyma to complete structures that include a nipple and areola.
  • Accessory breast tissue may be bilateral.
  • Accessory breast tissue responds to hormonal stimulation and may become more evident during menarche, pregnancy, or lactation.
  • Discomfort, pain, milk secretion, and local skin irritation can occur.


  • Both benign and malignant diseases of breast tissue in ectopic locations in adult women have been described.
  • Various disorders associated with supernumerary nipples, including urogenital defects, vertebral abnormalities, hypertrophic pyloric stenosis, testicular cancer, and aberrant ventricular conduction have been reported.
  • The treatment of choice for symptomatic accessory axillary breast tissue is surgical excision as removal of the tissue will relieve physical discomfort and confirms the diagnosis.

[edit] Imaging Findings for Accessory breast tissue

[edit] Images

Patient #1

[edit] Misc

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[edit] References for Accessory breast tissue


Breast