Normal breast anatomy Flashcards

1
Q

How are breasts present in males?

A

rudimentary form

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What are the breasts?

A

highly modified sweat glands which are a 2nd sexual characteristic of females

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What factors affect breast size?

A

genetic, racial and diet

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

axillary tail

A

part of breast extending towards axillary fossa

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What fascia does the breast lie on?

A

deep pectoral

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Function of rectomammary space

A

some degree of movement

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What attaches breast to dermis

A

suspensory ligament of cooper

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

nipple

A

prominence of breast

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

areola

A

pigmented area around the nipple

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

How many lobules does each breast contain?

A

15-20

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What drains each lobule?

A

lactiferous duct

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Where do the lactiferous ducts open?

A

independently on the nipple

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Dilated portion of lactiferous duct

A

lactiferous sinus

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

surface landmark of nipple

A

variable - 4th intercostal space

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Role of sebaceous glands in nipple and areola epithelium

A

protective lubricant

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

4 quadrants of breast

A

superolateral and superomedial

inferolateral and inferomedial

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Use of quadrants of breast

A

describing pathology

18
Q

Mammary crests

A

appear in week 4 and extend from axilla to inguinal region

19
Q

Where do the mammary crests not disappear from?

A

pectoral region

20
Q

polymastia/amastia

A

extra/absent breast

21
Q

amastia/athelia

A

extra/absent nipple

22
Q

3 arteries to breast

A

thoraco-acromial
internal thoracic
lateral thoracic

23
Q

Sensory innervation of skin of breast

A

anterior and lateral cutaneous branches of 4th-6th intercostal nerves

24
Q

What do the nerves for sensory innervation of breast also carry?

A

sympathetic fibres to blood vessels and smooth muscle around nipple

25
Q

Describe the lymphatics of the breast

A

main spread for mets

highly branched and no valves

26
Q

Lymph from lateral part of breast drains to…

A

AXILLARY

can go straight to supraclavicular or inferior cervical

27
Q

lymph from medial quadrants drain..

A

parasternal or opposite breast

28
Q

sentinel node biopsy

A

radioisotope and dye injected to trace the 1st draining LN

29
Q

2 cells which line ducts and acini

A

myoepithelial

luminal epithelial

30
Q

Pre-puberty changes of the breast

A

lactiferous ducts but no alveoli - fat,

little branching of ducts

31
Q

Puberty changes in breast

A

lactiferous ducts branching
solid, spheroidal masses of alveoli
lipids accumulate in adipocytes

32
Q

post-menopausal changes in the breast

A

progressive atrophy of lobules and ducts

fatty replacement of glandular tissue

33
Q

colostrum

A

protein rich fluid, available few days birth - rich in maternal ab

34
Q

Breast changes in pregnancy

A

enlarged lobules
acini dilated
epithelium vary from cuboidal to low columnar

35
Q

Lactating breast histology

A

acini dilated with milk
thin septa between lobules
milk production

36
Q

Imaging breast

A

USS, mammogram

37
Q

2 diagnostic methods of the breast

A

FNAC, core biopsy

38
Q

Epidemiology of breast cancer

A

20% of all cancers in women, 1 in 8 risk

commonest cause of death in women 35-55

39
Q

Symptoms of breast cancer

A
skin dimpling 
abnormal contours 
oedema 
nipple retraction 
lump 
orange peel skin
40
Q

Benign breast tumours

A

fibroadenoma
cysts
connective tissue tumours
adenoma

41
Q

Pagets

A

erosion of nipple resembling eczema

Ductal or invasive carcinoma association