This area, on the lower back, is the least likely place listed for breast tissue to be found. Breast tissue is usually found in the pectoral region, between the clavicle, sternum, costal margin, and axilla.

Breast tissue begins developing by the fourth week of fetal life along two ridges, called milk ridges or milk lines. Breast tissue, an extra nipple, or even a complete auxillary breast can form anywhere along these lines.

Well done! Continue to question 2.