Flashcards in Breast Deck (17):
What does breast tissue consist of?
mammary glands, fat and fibrous tissue
What segment levels are the breasts located?
between second and sixth ribs and between the sternum and midaxillary line
what is the midaxillary line?
vertical line dividing the armpit into anterior and posterior halves
What level is the nipple usually located?
fourth intercostal space
What is the ring of pigmented skin which surrounds the nipple?
What is the portion of the breast which extends back into the armpit and is a frequent site for cancer?
axillary process (tail)
What is the strong fibrous septa which supports the breast and which run through the breast from the skin to the deep layer of superficial fascia?
suspensory ligaments of breast
What is the mammary gland?
modified sweat gland located in the superficial fascia
What does each lobe of glandular tissue open onto?
tip of the nipple through a lactiferous duct
What is the expansion of the lactiferous duct that serves as a reservoir for milk during lactation?
What blood vessels supply the breast?
internal thoracic artery, thoracoacromial artery, lateral thoracic artery, and intercostal arteries
What lymphatic vessels drain the breast?
axillary nodes (most important), parasternal nodes, nodes of opposite breast, nodes of anterior abdominal wall
75% of lymph drains from breast into what nodes?
What is the most common cancer in women?
Where does breast cancer spread to first?
What are the signs of breast cancer?
dimpling (due to invasion of suspensory ligaments)
inverted nipples (due to invasion of lactiferous ducts)
leathery thickening of skin (like an orange)