2: Breast Pathology I Flashcards

1
Q

What is a triple assessment for suspected breast cancer?

A

Clinical - history and examination

Imaging - USS if < 40 (young women have denser breasts), mammogram if > 40

Biopsy - an FNA for cytology or a core biopsy for histology (more common)

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2
Q

How do pathologists take breast biopsies for cytology?

A

FNA

Or discharge samples, nipple scrapings

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3
Q

How do pathologists take breast biopsies for histology?

A

Core biopsy

Vacuum assisted biopsy

Skin biopsy

Incisional/Excisional biopsy

i.e all the ones involving cutting, core biopsy is the most important

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4
Q

What is the difference between cytology and histology?

A

Cytology - individual cells

Histology - tissue

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5
Q

The higher the grade number in a cytology or histology report, the more likely a tumour is ___.

A

malignant

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6
Q

In terms of purpose, a breast biopsy can be ___ or ___.

A

diagnostic - only removes a small sample

therapeutic - aims to remove whole mass if there is one

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7
Q

What ratings are used to describe tumours based on

a) cytology
b) histology?

A

a) C1-5

b) B1-5

higher numbers are bad

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8
Q

What is the main advantage of histology over cytology for staging breast tumours?

A

Histology allows you to identify carcinomas-in-situ

Which are more sinister than abnormal hyperplasias (lower stage tumours)

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9
Q

What are the developmental lines on which the mammary glands and nipples develop?

A

Milk lines

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10
Q

What are some developmental problems which can occur with the breasts?

A

Growth problems - hyper or hypoplasia

Accessory breast tissue

Accessory nipple

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11
Q

What is gynaecomastia?

A

Breast development in a male

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12
Q

In gynaechomastia, which breast structures grow in a male?

A

Breast DUCTS

but not the lobules themselves

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13
Q

Name two drug classes which cause gynaecomastia.

A

Oestrogen and oestrogen-like drugs

PPIs and H2 blockers

K-sparing diuretics i.e SPIRONOLACTONE

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14
Q

Name a recreational drug which causes gynaecomastia.

A

Cannabis

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15
Q

Problems with which organ can cause gynaecomastia?

A

Liver

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16
Q

Why can liver disease cause gynaecomastia?

A

Liver produces carrier proteins like sex hormone binding globulin

So when it fails, levels of circulating oestrogen increase -> gynaecomastia

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17
Q

Which menstrual abnormalities are risk factors for breast cancer?

A

Early menarche

Late menopause

The idea is that the more menstrual cycles a woman has, the greater the chances - so physiological amenorrhoea e.g post-natally is protective

18
Q

Which benign breast condition is associated with early menarche and late menopause?

A

Fibrocystic changes

19
Q

Which women tend to develop fibrocystic breast changes?

A

Perimenopausal women

40-50

20
Q

What do fibrocystic lesions look like?

A

Discrete breast lumps

Pale, blue dome

21
Q

What symptoms may women complain of which are caused by fibrocystic breast lumps?

A

Breast lump

Pain (sudden, constant or cyclical)

22
Q

How are benign fibrocystic lesions managed?

A

Reassure patient that it isn’t malignant

Excision if required

23
Q

What is a hamartoma?

A

Non-neoplastic cells but in an abnormal distribution or location

24
Q

What is a breast hamartoma?

A

Normal breast cells but in an abnormal number or location

25
Q

What is a common benign breast tumour typically found in women in their 30s?

A

Fibroadenoma

26
Q

Describe a fibroadenoma.

A

Well circumscribed

Rubbery in texture

Grey-white (not blue like fibrocystic lesions)

27
Q

Which imaging is used to view fibroadenomas?

A

USS

Because women tend to get them in their 30s (denser breasts)

28
Q

Fibroadenomas are (benign / malignant).

A

benign

29
Q

How are fibroadenomas managed?

A

Reassurance only

Very rarely excised only if causing discomfort

30
Q

Which benign breast lesion appears to have projections on USS and mimics malignancy?

A

Radial scar

31
Q

Which inflammatory breast condition is commonly caused by seatbelt injuries and warfarin?

A

Fat necrosis

Also dogs jumping up on people (true fact)

32
Q

Which inflammatory breast condition is associated with smoking and causes fistulas to open up around the nipple?

A

Duct ectasia

33
Q

Which inflammatory breast condition is caused by infection secondary to breastfeeding?

A

Acute mastitis

34
Q

Which samples can be used by a pathologist for cytopathology (looking at individual cells)?

A

FNA (fine needle aspirate)

Breast milk or nipple discharge

Nipple scrapings

35
Q

Why is ultrasound scanning superior to mammography (X-ray) for women under 40?

A

Younger women have denser breasts

36
Q

Are breast hamartomas benign or malignant?

A

Benign

May be mistaken for malignancy due to symptoms but they are normal cells, just growing in an abnormal place or shape

37
Q

What causes duct ectasia?

A

Blockage of ducts, causing inflammation –> pain and bloody/purulent discharge

38
Q

What occurs secondary to duct blockage in duct ectasia?

A

Inflammation > pain, discharge, nipple retraction

Fistulation

39
Q

Which lifestyle factor is duct ectasia associated with?

A

Smoking

40
Q

Which types of organism are responsible for duct ectasia?

A

Anaerobes

41
Q

Which specific organisms are commonly responsible for acute mastitis?

A

Staph aureus

Strep pyogenes

42
Q

What is a Phyllodes tumour?

A

Benign, slow growing breast tumour

Looks like a leaf on histology???

Cut it out