Breast Flashcards
where do the breast start and end?
2nd-6th rib in midclavicular line
what is the breast made up of?
glandular tissue, fat, fibrous tissue
how many ductal lobular units does a breat consist of?
15-20
how is the breast divide?
by fibrous septae (form the center outwards)
what 2 views can we use to look at breasts?
MLO = medial-lateral oblique CC= cranio-caudal
breast cancer causes microcalcification. what is this and where in the breast does it occur?
the abnormal build up of calcium. is linear and follows the milk ducts to nipple
why do you sometimes get an indentation when you have breast cancer
the fibrous septae (suspensory ligaments of cooper) are involved in the tumour
which vessels supply blood to the breast?
lateral thoracic artery internal thoracic artery thoraco-acromial artery thoraco-dorsal artery intercostal arteries
how do we get sensation in the breast?
intercostal nerves T3-T5
what colour does a tumour appear in ultrasound, MRI and x rays?
ultrasound = outlined in black
MRI, X ray = white
why are lymph vessels important to breast cancer?
tumours can spread by them
if all the lymph nodes are removed, can get oedema in the arms
where does the lymph of the breast drain?
superficial = sub areolar plexus deep= submammary plexus
if a node is removed by surgery, where else can the breast drain?
- infraclavicular group of node
- parasternal nodes
- mediastinal nodes
what congenital abnormalities can occur with the breasts?
accessory nipples
accessory breast tissue
underdevelopment or absence of breast
poland syndrome (lack of pectoralis on one side)
what scars are associated with the breast?
skin tension line
langer lines
axilla contractures
