BREAST Flashcards

1
Q

what percentage of breast cancer occurs in men?

A

<1%

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2
Q

DCIS is a precursor of invasiveness in the ____ breast

A

ipsilateral

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3
Q

is LCIS a premalignant change?

A

no

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4
Q

LCIS is a marker for…

A

increased risk of development of malignancy in either breast

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5
Q

most common breast cancer?

A

invasive ductal carcinoma

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6
Q

what percent of DCIS progress to invasive ductal carcinoma if left?

A

50%

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7
Q

how is DCIS treated?

A
  • wide local excision with clear margins and radiotherapy

- masectomy for large lesions or multicentric disease

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8
Q

how many grades of DCIS is there?

A

1-3 (according to the nuclear atypia and tubule differentiation)

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9
Q

what percentage of breast cancers express hormone receptors?

A

70%

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10
Q

what does mammogram of DCIS show?

A

microcalcifications

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11
Q

what is triple assessment?

A

clinical
radiological
pathological

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12
Q

downside of FNA?

A

-doesnt differentiate between invasive and non-invasive

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13
Q

uses of core needle biopsy?

A

-tells you receptor status, differentiates between carcinoma in situ and invasive carcinoma

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14
Q

when is wire guided open excision biopsy used?

A

when a core needle biopsy fails

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15
Q

What does TNM stand for?

A

TUMOR
NODES
METASTASIS

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16
Q

Tis

A

Tumour in situa

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17
Q

T0

A

No primary tumour located

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18
Q

T1

A

Tumour < 2cm

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19
Q

T2

A

Tumour 2-5 cm

20
Q

T3

A

Tumour > 5 cm

21
Q

T4

A

Tumour extends to chest wall

22
Q

N0

A

no nodes involved

23
Q

N1

A

mobile ipsilateral axillary nodes

24
Q

N2

A

fixed ipsilateral axially nodes

25
Q

N3

A

ipsilateral supraclavicular nodes

26
Q

M0

A

no metastasis

27
Q

M1

A

distant metastasis

28
Q

types of breast reconstruction following masectomy?

A

implant reconstruction

autologus reconstruction

29
Q

types of autologus reconstruction

A

free flap - DIEP

pedical flap - lattismus dorsi flap

30
Q

if a sentinal node is positive what is the next step?

A

axillary clearance of all lymph nodes

31
Q

which nerve is at risk during axillary node clearance?

A

long thoracic nerve

thoracodorsal nerve

32
Q

common complications of axillary node clearance?

A
  • axillary numbness

- lymphedema in arm

33
Q

Where are the 3 levels of axillary node clearance?

A

lateral to and medial to and behind the pec muscles

34
Q

what is tamoxifen?

A

SERM

35
Q

who is treated with tamoxifen?

A

ER+ premenopausal patients

36
Q

what is anastrazole?

A

-aromatase inhibitor

37
Q

who is treated with anastrazole?

A

-ER+ postmenopausal patients

38
Q

what is herceptin (trastuzamab)?

A

antibody directed at HER2 (in HER+ patients)

39
Q

what is lapatinib?

A

a tyrosine kinase inhibitor for EGFR and HER2

40
Q

what is an oncotype dx test?

A

a test that analyzes 21 genes to determine prognostic factors and whether a patient with early stage breast cancer would benefit from chemo

41
Q

dx of fibroadenoma?

A

ultrasound followed by core biopsy

42
Q

what is a fibroadenoma made of?

A

breast, epithelial and fibrous tissue

43
Q

diagnosis of breast cyst?

A

FNA, mammography to rule out malignancy

44
Q

treatment of fibrocystic disease

A

evening primrose oil to releive discomfort

45
Q

most common cause of gynecomastia in young males

A

cannabis

46
Q

most common cause of gynecomastia in older males

A

spironolactone