Accessory breast tissue
 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.
 Imaging Findings for Accessory breast tissue
 See Also
 External Links
- Goldminer: Accessory breast tissue
- Wikipedia's list of supernumerary nipples in popular culture.
- Wikipedia's list of accessory breasts in popular culture.
 References for Accessory breast tissue
- Laor, Tal, Collins, Margaret H., Emery, Kathleen H., Donnelly, Lane F., Bove, Kevin E., Ballard, Edgar T. MRI Appearance of Accessory Breast Tissue: A Diagnostic Consideration for an Axillary Mass in a Peripubertal or Pubertal Girl. Am. J. Roentgenol. 2004 183: 1779-1781.