Breast Medicine Flashcards

1
Q

What is fibroadenoma?

A

Benign tumour of the breast.

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

What is the histology of fibroadenoma

A

● glandular epithelium and interlobular stroma of a terminal duct lobular units
● Well-circumscribed, non-encapsulated.
● Does not infiltrate into the parenchyma of the breast

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

Give 4 differentials for a breast lump

A

Breast carcinoma.
Fibroadenoma.
Breast abscess.
Breast cyst.

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

How does fibroadenoma present

A

Solitary, mobile breast lump with a regular border.

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

How is fibroadenoma investigated

A

1st line - breast imaging (USS or mammogram)

Women <30: breast ultrasound.
● Smooth, well-circumscribed mass with uniform hypoechogenic
appearance.

■ Women >30 or highly suspicious for cancer: mammogram.
● Distinct, well-circumscribed mass.

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

What is Mastitis?

A

inflammation of the breast tissue, typically due to infection.

Divided into lactational and non-lactational (duct ectasia)

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

What is a Breast Abscesses?

A

An encapsulated accumulation of pus within the breast tissue due to infection

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

What is the cause of Lactational mastitis

A

Combination of breastfeeding-related nipple trauma and milk stasis predisposes the breast to local infection.

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

What is the cause of Duct ectasia mastitis

A

Blockage of lactiferous ducts due to squamous metaplasia leads to dilatation and inflammation.

Strongly associated with cigarette smoking

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

How does duct ectasia mastitis present

A

Nipple discharge
Tenderness or pain
Nipple retraction or inversion
A breast lump (pressure on the lump may produce nipple discharge)

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

What is the cause of breast abscess

A

Progression of untreated infective mastitis; walled-off collection of infection forms

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

How do Mastitis and Breast Abscesses present?

A

● Symptoms include: fever, breast pain / tenderness (often during breastfeeding)
● Signs include: erythema, swelling, firmness.
● Duct ectasia is also associated with nipple discharge

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

How is Mastitis investigated

A

usually a clinical diagnosis based on history and examination findings

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

How is Breast Abscesses investiagted

A

breast ultrasound and diagnostic needle
aspiration.

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

How is Lactational Mastitis managed

A

○ First Line: continued breastfeeding / milk expression plus simple analgesia
○ Second Line: >24 hour duration / severe pain - add PO flucloxacillin.

erythromycin when allergic to penicillin.

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

What is most common bacterial cause of Mastitis

A

Staphylococcus aureus.

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

How is Non-lactational Mastitis managed

A

First line: PO flucloxacillin

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

How are Breast Abscess managed

A

First Line: needle aspiration and drainage plus flucloxacillin (dependent on local
policy).

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

Why is the incidence of breast cancer thought to be increasing?

A

Western lifestyle.
Screening.
Increasing life expectancy.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

What percentage of women who have a mammogram will be called back for more tests?

A

4/100 will need more tests.

1/4 of these women will then be found to have cancer.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

Name 3 modifiable RF’s for breast cancer.

A

Alcohol intake.
Obesity.
Use of HRT/OCP.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

Name 3 non-modifiable RF’s for breast cancer.

A
  • Age of menarche/menopause
  • Breast density.
  • Genetics e.g. BRCA1/2
23
Q

Approximately what percentage of breast cancers are ductal and what percentage are lobular?

A

Ductal (70%).
Lobular (10%).

24
Q

What are the non invasive breast cancers

A

Ductal carcinoma in situ (DCIS)
Lobular carcinoma in situ (LCIS)

25
Q

Difference between invasive and non invasive breast cancer

A

Invasive = penetration through basement membrane

26
Q

What are the invasive breast cancers

A

Invasive ductal carcinoma (commonest - 75%)
Invasive lobular carcinoma
Medullary carcinoma

27
Q

What is Pagets disease of the nipple

A

Looks like eczema of the nipple/areolar
Indicates breast cancer involving the nipple
May represent DCIS or invasive breast cancer

28
Q

Give 4 signs that you may find on clinical examination that are suggestive of breast cancer.

A

Palpable lump - irregular, hard, fixed, painless.
Discharge from the nipple.
Nipple in-drawing.
Skin changes e.g. peau d’orange.

29
Q

How is breast cancer graded

A

Nottingham criteria:

○ Gland formation
○ Nuclear atypia / pleomorphism
○ Mitosis counts (indicates rate of cellular reproduction)

30
Q

What are the steps for metastatis

A
  1. Invasion through basement membrane
  2. Intravasation (entry into circulation)
  3. Circulation
  4. Extravasation
  5. Colonisation
31
Q

Common met locations for breast cancer

A

bones, liver, lungs and brain.

32
Q

What is the screening program for breast cancer

A

3-yearly mammogram for women aged 50-71.

33
Q

Breast cancer: what is the triple assessment?

A

Clinical examination e.g. palpation.
Mammogram.
Core needle biopsy.

34
Q

If a patient has breast implants or high density breasts a mammogram can be difficult to interpret. What investigation can be done as an alternative?

A

MRI

35
Q

Breast cancer: is a P1/2 lump that is described as soft, mobile and regular likely to be benign or malignant?

A

Benign. E.g. fibroadenoma.

36
Q

Breast cancer: is a P4/5 lump that is described as hard, fixed and irregular likely to be benign or malignant?

A

malignant

37
Q

What are the typical mammogram findings of malignant carcinoma

A

● Pre-invasive: unifocal / widespread microcalcifications

● Invasive carcinoma:
1. Irregular spiculated mass
2. Clustered microcalcifications
3. Linear branching calcifications.

38
Q

Give 3 treatment options for patients with breast cancer.

A
  1. Conservative surgery + radiotherapy.
  2. Mastectomy + radiotherapy.
  3. Mastectomy + reconstruction + radiotherapy (BUT can damage a lot of reconstructions).
  4. Axillary lymph node removal - limited removal or clearance.
39
Q

Why might a mastectomy be indicated as opposed to a lumpectomy in someone with breast cancer?

A

If the tumour is large relative to the size of breast.
If there are multiple tumours.
Patient preference.

40
Q

What biopsy should you do to ensure that breast cancer hasn’t spread to the axillary lymph nodes?

A

A sentinel node biopsy.

41
Q

Name 2 adjuvant treatments that can be given to women with oestrogen receptor positive cancer.

A
  • Tamoxifen (pre-menopausal).
  • anastrozole - Aromatase inhibitors (post-menopausal).
42
Q

What is triple-negative breast cancer

A

when the breast cancer cells do not express any of these three receptors
worse prognosis

Oestrogen receptors (ER)
Progesterone receptors (PR)
Human epidermal growth factor (HER2)

43
Q

Name 2 adjuvant treatments that can be given to women with HER2 receptor positive cancer.

A

Trastuzumab (Herceptin)

44
Q

Name 3 Breast Cancer Receptors

A

Oestrogen receptors (ER)
Progesterone receptors (PR)
Human epidermal growth factor (HER2)

45
Q

What is in the criteria for high risk breast cancer

A
  • BRCA1, BRCA2 genes - 40% lifetime risk of breast/ovarian cancer
  • 1st degree relative premenopausal relative with breast cancer (e.g. mother)
  • nulliparity, 1st pregnancy > 30 yrs (twice risk of women having 1st child < 25 yrs)
  • early menarche, late menopause
  • combined hormone replacement therapy
  • past breast cancer
  • not breastfeeding
  • ionising radiation
  • p53 gene mutations
  • obesity
  • previous surgery for benign disease (?more follow-up, scar hides lump)
46
Q

What is the two week criteria for breast cancer

A
  • Unexplained breast or axillary lump in a woman aged >30.
  • Unilateral nipple changes in a woman aged >50.
  • Skin changes suggestive of breast cancer, any age.
47
Q

What is a complication of axillary lymph node clearence

A

Chronic Lymphoedema

48
Q

What is Intraductal Papilloma

A

a warty lesion that grows within one of the ducts in the breast.
proliferation of epithelial cells

49
Q

How does Intraductal Papilloma present

A

Nipple discharge (clear or blood-stained)
Tenderness or pain
A palpable lump

50
Q

how is Intraductal papillomas managed

A

complete surgical excision.

51
Q

How do breast cysts feel on examination

A

Smooth
Well-circumscribed
Mobile
Possibly fluctuant

52
Q

What are the options for reconstructing the breast after mastectomy?

A

Breast implants
Flap reconstruction

53
Q

Name side effects of radiotherapy

A

General fatigue from the radiation
Local skin and tissue irritation and swelling
Fibrosis of breast tissue
Shrinking of breast tissue
Long term skin colour changes (usually darker)