Areolar glands or Glands of Montgomery are sebaceous glands in the areola surrounding the nipple. The areolar glands are in the areola that surrounds the nipple in the female breast. Pigmentation of the nipples and areola also increases. The nipple of the breast is surrounded by the areola (nipple-areola complex). The earlobe consists of areola and adipose tissue. The areola and nipple contain Golgi-Mazzoni, Vater-Pacini and genital corpuscles. One of these abnormalities is changed in the areola or nipple. Cysts can also be confused with infections that form on the nipple or the areola. Women's swimsuits generally cover at least the areola and bottom half of the breasts. Other small openings in the areola are sebaceous glands, known as Montgomery's glands. The areola contains modified sweat glands known as Montgomery's glands. The hair surrounding the areola adds additional sensory tissue. Estradiol together with other ovarian steroids also cause the darker coloration of the areola. The size of the areola can vary widely among women.