Breast

Front 1

Blood supply to breast

Back 1

Axillary artery - highest thoracic, pectoral branches of thoracoacromial, lateral thoracic, subscapular

Internal Thoracic - perforating branches to anteromedial part of breasts

2nd and 4th intercostal arteries - perforating branches (laterally). 2nd perforating usually the largest (supplies upper region of breast, nipple, areola, and adjacent breast tissue)

Front 2

Venous drainage of breast

Back 2

Medial drainage through internal thoracic vein to heart.

Posterior drainage to VERTEBRAL VEINS

Lateral drainage to intercostal, superior epigastric veins and LIVER

Lateral superior drainage through axillary vein to right heart.

THINK SITES OF METASTASIS

Front 3

Lymphatic drainage of breast

Back 3

Front 4

Lymphatic drainage of chest

Back 4

Front 5

Axillary lymph nodes

Back 5

Front 6

Nerve supply to breast

Back 6

Front 7

Breast skin dimpling cause

Back 7

Invasion and contraction of ligaments of Cooper

Front 8

Peau d'orange of breast cause

Back 8

occurs as a result of blocked dermal lymphatics by carcinoma. This results in lymph stagnation with resultant skin edema while the pits of the hair follicles appear retracted beneath the level of the skin

Front 9

Retraction of the nipple potential cause

Back 9

carcinoma - invasion of the Lactiferous ducts with resultant pull on the nipple

Front 10

Duct system of breast

Back 10