Breast anatomy Flashcards
What are the borders of the breast?
Rib 2-6
Lateral border of sternum
Mid-axillary line
What is the bed of breast tissue attached to?
Deep fascia that covers pec major and serratus anterior
What lies between the breast tissue and the deep fascia?
Retromammary space
What does the retromammary space allow for?
Movement
What attaches breast tissue to the skin?
Suspensory ligaments
What is the basic unit of the breast?
Lobules (Non-lactating -> Lactating)
How can the breast be split up?
Quadrants (Upper outer, UI, LO, LI)
Clockface
How do you asses movement of the breast (to see in lump has infiltrated muscle etc)
Hands on hip to contract pec major. Breast shouldn’t move.
When feeling for breast lumps where should you include?
Axilla
Supraclavicular
Where does lymph from 75% of the breast tissue drain?
Ipsilateral axillary lymph nodes
Where do axillary lymph nodes drain?
Supraclavicular nodes
Other than breast where does the left supraclavicular lymph node receive drainage from?
Most of the body via the thoracic (left lymphatic) duct
Where does the thoracic and right lymphatic ducts drain?
Subclavian angle (where subclavian joins jugular to form brachiocephalic)
Where can lymph from the internal quadrants of the breast drain?
Parasternal LN
Where can lymph from the lower inner quadrant drain?
Abdo LN
