“You are never tooyoung for breast cancer” Diagnosed at age of 2 years Total MastectomyJuvenile SecretoryBreast Carcinoma
Mammary gland. Present in both sexes. Rudimentary in male. Well developed in female after puberty. Apocrine gland.
- In the superficial fascia of the pectoral region. Vertically: 2nd to 6th ribs. Horizontally: lateral border of sternum to mid- axillary line.• Above: Clavicle• Below: 7th to 8th ribs• Medially: Midline• Posteriorly : to the edge of latissimus dorsi
Parenchyma: Lobes: Lobules- 15 – 20 in number- Composed of minute glandular Ductulesstructures called lobules- Lobules empty via ductules inlactiferous ducts Lactiferous duct Lactiferous ducts:- Open on to nipple Lactiferous sinus- Contains ampulla near its end(Reservoir of milk or abnormal discharge) Nipple
Stroma:Partly fibrous & partly fatty Ligaments of Cooper:- Anchors the breast with skin- Cancer cells may infiltratethese ligaments, so the breastbecomes fixed & contraction ofthe ligaments can cause retractionor puckering (folding) of the skin.
o Veins follow the arteries.o First converge around the nipple to form an anastomotic venous circle & then form 02 sets of veins. • Superficial veins: drain into Internal thoracic vein & superficial veins of the lower part of the neck • Deep veins: drain into Internal thoracic , Axillary & Posterior intercostal veins
Axillary vein Anastomotic venous circle Internal thoracic vein
• 4th to 6th intercostal nervesby their Anterior & Lateralcutaneous branches;• Milk secretion by Prolactin,not by nerves
Devoid of valves. Superficial lymphatics skin over breast except nipple & areola Deep lymphatics parenchyma as well as nipple & areola Subareolar plexus Subareolar plexus (of Sappy) of Sappy