Breast Cancer treatment Flashcards

1
Q

treatment options

A

Surgery
radiotherapy
systemic therapy
- hormonal, cytotoxic chemo, immuno

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2
Q

What is radiotherapy used for? (intent)

A

postop

primary radical for locally advanced (rare)

Palliative to painful bony mets, skin deposits, brain mets

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3
Q

Where is post-operative radiotherapy used on?

A

breast/chest wall

nodal areas: axilla, supraclavicular fossa

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4
Q

When is postop radio used?

A

all patients being treated conservatively (wide local excision/lumpectomy)

Mastectomy selected patients

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5
Q

Criteria for postop radiotherapy in mastectomy patients (3)

A

Large tumour
Extensive nodal involvement (4 or more)
involved margins (

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6
Q

Acute side effects of postop radiotherapy (3)

A

tiredness
skin erythema to moist desquamation
possible mild dysphagia if irradiating supraclav fossa

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7
Q

Post op radiotherapy - late adverse effects (3)

A

local fibrosis and telangectasia

lung fibrosis (rarely symptomatic)

cardiac damage (IHD) - rarer now due to better planned treatment

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8
Q

Post op radiotherapy - positive late effects

A

overall modest improvement in survival - probably need to prevent 4 recurrences to save 1 life

Previous excess cardiovascular mortality reduced with current techniques

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9
Q

systemic therapy - adjuvant, most operable why not curable

A

occult distant mets at presentation

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10
Q

adjuvant systemic therapy options

A

hormone therapy

cytotoxic chemo

immunotherapy

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11
Q

types of hormone therapy (3) and benefits

A

ovarian ablation

Herceptin - HER2 +ve

If OR/PgR +ve:

  • tamoxifen
  • aromatase inhibitors (anastrozole in post meno)

ALL decrease odds of death by 17%, absolute benefit of 6% at 10 years

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12
Q

adjuvant systemic therapy side effects : hormone therapy (5)

A

infertility

menopausal symptoms

endometrial cancer

weight gain

DVT

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13
Q

adjuvant systemic therapy side effects : chemotherapy (6)

A

infertility

mouth ulcers

neutropenia - sepsis

Alopecia

N/V

Lassitude

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14
Q

median survival with mets

A

18m - 2years (20% at 5yrs) but may be decades

varies from acute aggressive disease to chronic disease

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15
Q

where do breast mets go?

A

brain, bones (hip)

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16
Q

metastatic disease local problems - palliative options

A

palliative radiotherapy: bony mets, brain mets

drainage of pleural or peritoneal effusions

pining of path #

17
Q

metastatic disease: systemic therapy options

A

hormone therapy if ER/PG +ve

Chemo

Bisphosphonates for bony mets

If HER+ve Trastuzumab

18
Q

Hormonal agents

A

aromatase inhibitors
Tamoxifen,
Progestagens;
with above therapies used in sequence

19
Q

When chemo used instead of hormonal ?

A

LIVER mets or lymphangitis carcinomatosa

20
Q

Chemo options in metastatic disease

A

anthracyclines, taxanes, capecitabine

Use in sequence so long as respond and patient fit

21
Q

Who gets radiotherapy after breast surgery?

A

Anyone who has had lumpectomy; those with higher risk tumours after mastectomy

22
Q

What is the absolute benefit in survival of adjuvant chemotherapy in breast cancer?

A

Between 0% and 15%

23
Q

What is the major difference between aromatase inhibitors and tamoxifen?

A

AIs lower circulating oestrogen in post-menopausal women; tamoxifen is partial agonist at receptor

24
Q

What is the benefit of neo-adjuvant chemotherapy in breast cancer?

A

It decreases the number of people who need mastectomy

25
Q

Is there a proven overall survival advantage for AIs over tamoxifen in the adjuvant setting?

A

No, the overall survival advantage for both drugs is the same, but 10y of TAM is 3% better than 5y

26
Q

What is the standard sequence of treatment for early breast cancer

A

Surgery; radiotherapy; (chemo); adjuvant hormonal treatment (if applicable)