Appearance ∙ each breast is generally circular or tear drop in shape ∙ one breast is often larger than the other ∙ a nipple is in the center of each breast ∙ the nipple may stand out, be flat or pulled in ∙ the colored area around the nipple is called the areola ∙ the areola may be pink, brown or black like our complexion ∙ little bumps called Montgomery’s glands may be seen on the areola ∙ hair follicles are common around the nipple
Position ◦ the breast extends from the collar bone to bra line and breast bone to the armpit ◦ breasts are positioned over the ribs and two muscles ◦ the muscles are called the pectoralis major and pectoralis minor muscles
Composition each breast has 15-20 lobes each lobe has many small lobules (like a stem of grapes) breast milk is produced in the lobules slender tubes called ducts carry the breast milk to the nipple www.cancerquest.org
the nipple has 6-8 openings where the milk is secreted fatty and fibrous tissue provide shape and support to the breast www.cancerquest.org
THE BREAST Vessels Lymph node Lymph channel Milk lobes (glands) Lactiferous sinus Lactiferous duct Nipple Areola Chest wall muscle Supportive ligaments Fatty tissue Illustrations: C2007 GCT II Solutions and Enterprises Ltd.
BREAST DEVELOPMENT fetal development begins during the 6th week of fetal life develops in a line called the milk ridge
The Milk Ridge the milk ridge runs from the armpit to the groin the line shrinks by the 9th week of fetal life remaining only in the chest area in animals the ridge remains, which is why they have multiple nipples occasionally a woman will have an extra nipple (on this line) which is often mistaken for a birthmark
breast tissue is present 80-90% of all infants (boys & girls) have nipple discharge on the 2nd or 3rd day of life this discharge is called witch’s milk and goes away within a couple of weeks at birth the tissue is sensitive to the mothers hormones circulating through the placenta
the ducts begin to grow and reach full growth around the time menstruation begins one breast may develop more quickly than the other the female hormones estrogen and progesterone affect breast growth one breast may always be larger a bud of breast tissue begins to grow under the nipple at puberty
Breast Size ◦ the proportion of milk glands, ducts and fat in the breast changes with age ◦ during puberty the breast is mainly ducts ◦ breasts of 20 year old women are mainly lobular (milk glands) tissue ◦ size increases dramatically in pregnant and breastfeeding women ◦ breasts of women over 50 years are mainly fatty tissue ◦ because of the fatty makeup of breasts, size can change as a person’s body shape and size changes
knowing what is normal for your breasts may help you detect changes if they occur.
You can become breast familiar in any way that feels comfortable for you. There is no need to follow any kind of routine or schedule.
This might mean looking and feeling while… ◦ getting dressed ◦ looking in the mirror ◦ in the bath or shower ◦ standing up or lying down
breasts and nipples come in all different… shapes sizes colors textures
normal adolescent breasts may have… sensitivity or discomfort hair around nipples inverted nipples nipple discharge a difference in size between breasts stretch marks swelling, tenderness, increased lumpyness
Potential Breast Changes to Check Out With Your Doctor changes in size, shape or colour puckering or dimpling of the skin a new lump a change in the nipple thickened or hard skin spontaneous, new or bloody nipple discharge pain in the breast or armpit that is unrelated to one’s menstrual cycle
Provided by: CancerCare Manitoba Breast Screening Program Breast Health – There is so Much You Can Do (Pamphlet)
be “P.I.N.K.” to reduce your risk P ractice what you know eat healthy be active don’t smoke one drink per day or less I nvestigate the information know fact from fiction N know what’s normal for your body and breasts K nowledge is power BREAST CANCER
Students should contact CancerCare Manitoba Breast Cancer Centre of Hope (788-8080 or Toll Free at 1-800-660-4866) in Winnipeg for further information if necessary.