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Cancer Flashcards

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1
Q

What is oncology?

A

a branch of medicine that deals with the prevention, diagnosis, and treatment of cancer

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2
Q

How does cancer develop?

A

as cells become abnormal, old or damaged cells survive when they should die and new cells form when they are not needed
these extra cells can divide without stopping and may form growths called tumours
many cancers form solid tumours (masses of tissue)
blood cancers do not generally form solid tumours

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3
Q

What is a malignant tumour?

A

a tumour that can spread into, or invade, nearby tissues
as these tumours grow, some cancer cells can break off and travel to distant parts of the body through the blood or lymphatic system and form new tumours far from the original tumour

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4
Q

What is a benign tumour?

A

a tumour that does not spread into, or invade, nearby tissues
can sometimes be quite large
when removed, does not usually grow back (malignant tumours sometimes do)
benign brain tumours can be life-threatening

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5
Q

Why is cancer a genetic disease?

A

it is caused by changes to genes that control the way our cells function, especially how they grow and divide

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6
Q

What causes genetic changes?

A 
hereditary 
UV radiation
chemicals
viruses
smoking
cells dividing
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7
Q

What are somatic genetic changes?

A

alterations to DNA after birth
not hereditary
related to external factors

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8
Q

What are familial cancers?

A

can be hereditary and passed down in DNA

classed as germline mutations

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9
Q

The genetic changes that contribute to cancer tend to affect which three main types of genes?

A

proto-oncogenes
tumour suppressor genes
DNA repair genes

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10
Q

What are proto-oncogenes?

A

involved in normal cell growth and division
when these genes are altered in certain ways or become more active than normal, they may become cancer-causing genes (oncogenes), allowing cells to grow and survive when they should not

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11
Q

What are tumour suppressor genes?

A

involved in normal cell growth and division

cells with certain alterations in tumour suppressor genes may divide in an uncontrolled manner

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12
Q

What are DNA repair genes?

A

involved in repairing damaged DNA
cells with mutations in these genes tend to develop additional mutations in other genes
together, these mutations may cause the cells to become cancerous

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13
Q

How many new cancer cases were recorded worldwide in 2018?

A

17 million

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14
Q

How many new cancer cases are recorded in the UK each year?

A

363,000

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15
Q

How many new cancer cases were recorded in females in the UK in 2016?

A

178,000

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16
Q

How many new cancer cases were recorded in males in the UK in 2016?

A

185,000

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17
Q

Breast, prostate, lung, and bowel cancers together accounted for what percentage of new cancer cases recorded in the UK in 2016?

A

53%

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18
Q

What age group in the UK has seen the greatest increase in new cancer cases since the 1990s?

A

0-24 years

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19
Q

What age group in the UK had the highest incidence rates for all cancers combined between 2014 and 2016?

A

85-89 years

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20
Q

What age group has the highest recorded number of cancer cases in the UK?

A

58-89 years

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21
Q

What percentage of all cancer cases occur in 0-24-year-olds?

A

1%

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22
Q

What percentage of all cancer cases occur in 25-49-year-olds?

A

10%

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23
Q

What percentage of all cancer cases occur in 50-74-year-olds?

A

53%

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24
Q

What percentage of all cancer cases occur in 75+-year-olds?

A

36%

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25
Q

What are the two most common types of cancer in females aged 25-49 years?

A

breast cancer 44%

melanoma 9%

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26
Q

What are the two most common types of cancer in females aged 50-74 years?

A

breast cancer 34%

lung cancer 13%

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27
Q

What are the two most common types of cancer in females aged 75+ years?

A

breast cancer 22%

lung cancer 16%

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28
Q

What are the two most common types of cancer in males aged 25-49 years?

A

testicular cancer 14%

melanoma 11%

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29
Q

What are the two most common types of cancer in males aged 50-74 years?

A

prostate cancer 30%

lung cancer 13%

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30
Q

What are the two most common types of cancer in males aged 75+ years?

A

prostate cancer 24%

lung cancer 16%

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31
Q

What cancer screening tests are available in the UK?

A

breast screening
cervical screening
bowel screening

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32
Q

What patient population is offered breast screening?

A

women aged 50-70 years

a trial is being undertaken to establish the suitability of screening between 47-73 years

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33
Q

What patient population is offered cervical screening?

A

women aged 25-49 years every three years

women aged 50-64 years every five years

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34
Q

What patient population is offered bowel screening?

A

men and women aged 60-74 years
offered to men aged 50-74 years in Scotland
bowel scoping offered to those aged 55 years in England

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35
Q

What are the two main systems of cancer staging?

A 
TNM (tumour, node, metastasis)
number staging (1-4)
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36
Q

What is the TNM (tumour, node, metastasis) system?

A

describes the size of the initial cancer (primary tumour), whether the cancer has spread to the lymph nodes, and whether it has spread to a different part of the body (metastasised)
the system uses letters and numbers to describe the cancer

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37
Q

What does T refer to in the TNM system?

A

the size of the cancer and how far it has spread into nearby tissue
numbered 1, 2, 3 or 4 (1 is small and 4 is large)

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38
Q

What does N refer to in the TNM system?

A

whether the cancer has spread to the lymph nodes

numbered from 0 (no lymph nodes containing cancer cells) to 3 (many lymph nodes containing cancer cells)

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39
Q

What does M refer to in the TNM system?

A 
whether the cancer has spread to another part of the body
numbered 0 (not spread) or 1 (spread)
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40
Q

What is the number staging system?

A

TNM system can be used alongside this approach

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41
Q

What does stage 1 refer to in the number staging system?

A

usually means that a cancer is relatively small and contained within the primary organ

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42
Q

What does stage 2 refer to in the number staging system?

A

usually means that the tumour is larger than in stage 1, but the cancer has not started to spread into the surrounding tissues
sometimes means that cancer cells have spread to lymph nodes near the tumour
this depends on the particular type of cancer

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43
Q

What does stage 3 refer to in the number staging system?

A

usually means the cancer is larger
may have started to spread into surrounding tissues
cancer cells present in the lymph nodes in the area

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44
Q

What does stage 4 refer to in the number staging system?

A

the cancer has spread to another organ (secondary/metastatic cancer)

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45
Q

How is surgery used in oncology?

A

to diagnose cancer
to cure cancer
to prevent or reduce cancer
palliative to extend life/quality

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46
Q

What factors determine whether surgery is used in oncology?

A 
type of cancer
location of tumour
size of tumour
metastasis
the general health of the person
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47
Q

How is chemotherapy used in oncology?

A

given pre-surgery (neoadjuvant) or post-surgery (adjuvant) to prevent cell division of the mutated cell
medication can be combined to treat areas:
MIC is M = mitomycin (late G1 and S), I = ifosfamide (non-specific cell but alkylating agent), C = cisplatin (G2 and M)

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48
Q

List the three routes through which chemotherapy can be delivered.

A

oral
central line
peripheral inserted central catheter (PICC)

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49
Q

What is meant by a ‘cycle’ of chemotherapy?

A

refers to the length of time chemotherapy is taken

one cycle refers to one period of the whole cycle in certain cases (e.g. 4-8 cycles that last 3-6 months)

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50
Q

What is a ‘regime’ of chemotherapy?

A

agreed based on cancer and patient outcomes
a patient may receive chemotherapy on days 1, 2 and 3 in 4 weeks, but will receive none from the 4th-28th in that month
a new cycle begins when the person starts to take the medication again

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51
Q

How is radiotherapy used in oncology?

A

works by aiming a high dose of radiation towards a person’s tumour which damages cell DNA

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52
Q

How does radiotherapy damage cell DNA?

A

radiation can directly damage DNA by causing breaks along the strands of genetic material
radiation can trigger the formation of very reactive molecules that can themselves be damaging (e.g. free radicals)

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53
Q

List the two routes through which radiotherapy can be delivered.

A

internally (radioactive iodine - thyroid cancer)

externally (breast cancer)

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54
Q

List the five cancer sites with the highest 1-year survival in men (ONS, 2019).

A
  1. melanoma
  2. prostate
  3. testis
  4. Hodgkin lymphoma
  5. thyroid
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55
Q

List the five cancer sites with the highest 1-year survival in women (ONS, 2019).

A
  1. melanoma
  2. breast
  3. thyroid
  4. Hodgkin lymphoma
  5. uterus
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56
Q

List the five cancer sites with the lowest 1-year survival in men (ONS, 2019).

A
  1. mesothelioma
  2. brain
  3. liver
  4. lung
  5. pancreas
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57
Q

Name the cancer sites with the highest 5-year net survival in men and women (ONS, 2019).

A
  1. oesophagus
  2. lung
  3. brain
  4. liver
  5. pancreas
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58
Q

Name the cancer site with the highest 5-year net survival in men and women (ONS, 2019).

A

men - testis (95.3%)

women - melanoma (93.4%

59
Q

Name the cancer site with the lowest 5-year net survival in men and women (ONS, 2019).

A

men - pancreatic (6.5%)

women - pancreatic (8.1%)

60
Q

What was the incidence of breast cancer in the UK in 2016?

A

54,500

61
Q

What was the incidence of male breast cancer in the UK in 2016?

A

360

62
Q

What proportion of people in the UK will develop breast cancer at some stage in their life?

A

1 in 7

63
Q

What proportion of people over the age of 50 will develop breast cancer in the UK?

A

8 in 10

64
Q

What was the incidence of breast cancer in people under the age of 50 in the UK in 2016?

A

10,000

65
Q

What was the incidence of breast cancer in people under the age of 39 in the UK in 2016?

A

2,200

66
Q

On average, how many cases of breast cancer occur in the UK each year?

A

46,000

67
Q

What are the two main breast cancer sites?

A

invasive ductal breast cancer (80%)

invasive lobular breast cancer (10%)

68
Q

What causes the remaining 10% of breast cancer cases?

A

inflammatory breast cancer (1-5%)
Paget’s disease (1-4%)
ductal carcinoma in situ (6,700 cases)
lobular carcinoma in situ (710 cases)

69
Q

What does in situ ductal/lobular carcinoma refer to?

A

the containment of the abnormal cells within an area (at risk of invasive development)

70
Q

What does invasive ductal carcinoma refer to?

A

70%
most invasive have no special features or type
presence can indicate rarer cancers

71
Q

What does invasive lobular carcinoma refer to?

A

12.2%
can develop at any age
most common in people aged 45-55 years

72
Q

What happens in inflammatory breast cancer?

A

cancer cells block the smallest lymph ducts in the breast

this leads to fluid accumulation and inflammatory mediators due to cancer

73
Q

What is Paget’s disease?

A

develops in the nipple or areola
causes redness, scaling and flaking of the nipple
a sign of potential breast cancer in the tissue behind the nipple

74
Q

List some of the signs and symptoms of in situ ductal carcinoma.

A

lump in breast
discharge from the nipple
consider general BCA symptoms

75
Q

List some of the signs and symptoms of in situ lobular carcinoma.

A

does not usually cause any signs or symptoms

may be seen on a mammogram

76
Q

List some of the signs and symptoms of invasive ductal carcinoma.

A

lump/thickening breast
size/shape/feel breast
look - rash on the nipple or around the area
lump - armpit

77
Q

List some of the signs and symptoms of invasive lobular carcinoma.

A

thickening or oedema
look - nipple inverted/dimpling
feel - thickened
consider general BCA symptoms

78
Q

List some of the signs and symptoms of inflammatory breast cancer.

A

oedema/lump
look - erythema/possible inverted nipple
feel - firm and hot
discharge from the nipple

79
Q

List some of the signs and symptoms of Paget’s disease.

A

erythema, scaling/rash on nipple/areola
look - discharge from the nipple and possible inversion
feel - itchy, painful and burning sensation
consider general BCA symptoms

80
Q

What tests may be used to diagnose breast cancer?

A

mammogram
ultrasound (more likely for people under 35 years)
MRI (breast)
biopsy - needle aspiration

81
Q

Name the three types of breast biopsies.

A

fine needle aspiration
core needle biopsy
open (surgical) biopsy

82
Q

What is a fine needle aspiration?

A

collects samples of cells

83
Q

What is a core needle biopsy?

A

collects core of tissue

ultrasound or MRI guides process

84
Q

What is an open (surgical) biopsy?

A

removes all or part of the abnormality

85
Q

How is breast cancer identified on a mammogram?

A

the cancerous mass may appear as a bright and irregular image with spiky or fuzzy edges

86
Q

How is breast cancer identified in an ultrasound?

A

the cancerous mass appears darker, indicating it is solid

it may have spiky or irregular edges

87
Q

How is breast cancer identified on MRI?

A

contrast agent causes the cancerous mass (or outside of mass) to brighten, then fade
irregular or spiky borders are common

88
Q

How is breast cancer identified in a biopsy?

A

under a microscope, cancer cells may:
appear clustered
have irregular, large, or additional nuclei
invade blood or lymphatic vessels

89
Q

How is breast cancer staged?

A 
TMN
number stages 1-4
grading (microscope)
low grade - 1 (slow growing)
intermediate grade - 2
high grade - 3 (faster growing)
90
Q

What does ER refer to in a tumour biopsy?

A

oestrogen positive/negative

91
Q

What does PR refer to in a tumour biopsy?

A

progesterone positive/negative

92
Q

What does HER2 refer to in a tumour biopsy?

A

Herceptin positive/negative

93
Q

What is meant by the term ‘early breast cancer’?

A

cancer has not spread beyond the breast or lymph nodes in the armpit on the same side of the body

94
Q

What is meant by the term ‘local recurrence’?

A

cancer has returned in the same area of the breast after treatment

95
Q

What is meant by the term ‘locally advanced breast cancer’?

A

cancer has not spread to another part of the body, but might be:
bigger than 5cm in diameter
growing into the skin or muscle of the chest
present in the lymph nodes in the armpit, and the nodes are stuck to each other or to other structures

96
Q

What is the treatment for invasive breast cancer?

A

surgery (mastectomy/lumpectomy)
radiotherapy
chemotherapy
hormonal

97
Q

What is the treatment for in situ breast cancer?

A

surgery (mastectomy/lumpectomy)
possible radiotherapy
hormonal

98
Q

What is the treatment for inflammatory breast cancer?

A

chemotherapy (neoadjuvant)
surgery (mastectomy/lumpectomy)
radiotherapy
hormonal

99
Q

What is the treatment for Paget’s disease?

A

sentinel biopsy

possible surgery, radiotherapy or chemotherapy (variable)

100
Q

What is the hormonal treatment for breast cancer?

A

ER + oestrogen receptor blocker + tamoxifen
ER + aromatase inhibitors (AIs) convert lipids into oestrogen:
anastrozole (Arimidex)
letrozole (Femara)
exemestane (Aromasin)
HER2 + Herceptin blocker = trastuzumab

101
Q

What is the hormonal treatment for breast cancer pre-menopause?

A

tamoxifen for 5 years with a potential for this to continue for another 5 years
AI given if tamoxifen not tolerated

102
Q

What is the hormonal treatment for breast cancer post-menopause?

A

anastrozole or letrozole for 5 years, OR
one of these drugs for 2 years followed by tamoxifen for 3 years
tamoxifen given for 5 years if AI not tolerated
other options:
tamoxifen for 2-3 years and then AI to total of 5 years
tamoxifen for 5 years and then letrozole for another 5 years

103
Q

How long do follow-ups usually last for breast cancer?

A

5 years

104
Q

What do follow-ups involve?

A

outpatient appointment with CNS or member of the medical team
mammogram/biopsy if needed

105
Q

What is the survival rate for patients with stage 1 breast cancer?

A

around 98% for 5+ years after diagnosis

106
Q

What is the survival rate for patients with stage 2 breast cancer?

A

around 90% for 5+ years after diagnosis

107
Q

What is the survival rate for patients with stage 3 breast cancer?

A

around 70% for 5+ years after diagnosis

108
Q

What is the survival rate for patients with stage 4 breast cancer?

A

around 25% for 5+ years after diagnosis

the cancer is not curable at this stage, but may be controlled with treatment for several years

109
Q

What is chronic oedema/lymphoedema (The National Lymphoedema Partnership, 2014)?

A

a term used to describe a group of conditions characterised by the presence of swelling within body tissues, caused by the accumulation of excess fluid within the interstitial space of the affected area

110
Q

What causes oedema?

A

an imbalance between capillary filtration into and lymphatic drainage from the interstitial space
damage to lymph nodes/vessels

111
Q

What is the normal duration of chronic oedema?

A

over 3 months

in other situations, diagnosis/treatment may occur during the first 3 months of symptoms

112
Q

What are the functions of the lymphatic system?

A

fluid balance - to gather plasma and its constituents (protein, water, hormones, bacteria, enzymes, fats, waste products)
to act as a defence mechanism against bacteria and mutant cells

113
Q

What are the different types of lymphoedema?

A 
primary
secondary
trauma
parasitic
cancer
vascular
infection/inflammation
obstruction/sedentary
114
Q

What is primary lymphoedema?

A

relates to disturbances in the development of the lymphatic system which may or may not be genetic
over 24 different types of primary lymphedema with at least 9 causal mutations known for inherited human lymphedema
may present at birth or later in life

115
Q

What is secondary lymphoedema?

A

damage to the lymphatic system due to extrinsic factors

more common than primary lymphoedema

116
Q

List some examples of extrinsic factors that may cause secondary lymphoedema.

A

parasitic infection
obstruction/destruction of vessels (tumour, surgery, excision, radiotherapy)
scarring, trauma, inflammation, infection
venous disease - lymphovenous oedema
immobility/obesity

117
Q

Name two types of trauma that can cause lymphoedema.

A

burns

necrotising fasciitis

118
Q

Name one parasitic infection that can cause lymphoedema.

A

filariasis - an infectious tropical disease caused by any one of several thread-like parasitic roundworms

119
Q

Name two types of cancer that can cause lymphoedema.

A

breast

head and neck

120
Q

Name two types of vascular disease that can cause lymphoedema.

A

venous disease

DVT

121
Q

Name one type of infection that can cause lymphoedema.

A

cellulitis

122
Q

What is the average caseload of patients who access lymphoedema services (Cooper and Bagnall, 2016)?

A 
78% female
20% male
2% children
60% non-cancer - venous/obesity
40% cancer - breast
123
Q

What is lipoedema?

A

females only - 1 in 72,000
genetic involvement suspected
bilateral - symmetrical swelling from the iliac crest to ankles
dorsum of feet never involved
Stemmer’s sign negative
little or no pitting -soft tissue texture
painful to palpate - bruise easily

124
Q

What are the characteristics of stage 1 lipoedema?

A

skin appears smooth

on palpation, the thickened subcutaneous tissue contains small nodules

125
Q

What are the characteristics of stage 2 lipoedema?

A

skin has an irregular texture that resembles the skin of an orange
subcutaneous nodules occur that vary from the size of a walnut to an apple

126
Q

What are the characteristics of stage 3 lipoedema?

A

the indurations are larger and more prominent than in stage 2
deformed lobular fat deposits form, especially around the thighs and knees, and may cause considerable distortion of the limb profile

127
Q

What are the characteristics of stage 4 lipoedema?

A

lipoedema with lymphoedema (lipolymphoedema)

128
Q

List some of the physical signs of lymphoedema.

A 
distortion
hyperkeratosis
erythema
positive Stemmer sign
papillomatosis
distortion
129
Q

List some of the physical symptoms of lymphoedema.

A

heaviness
aching
feels like bruising
hinders mobility

130
Q

What factors do clinicians take into account in the assessment and diagnosis of lymphoedema?

A 
past medical history
lymphoedema history
medication
pain/discomfort
functional assessment
impact on quality of life
physical examination
131
Q

What tools can clinicians use when physically examining patients with lymphoedema?

A

tape measure
bioelectrical impedance analysis (BIA) - estimates cellular fluid volume
moisture meter - converts fluid volume into a percentage

132
Q

What is the link between an acute inflammatory episode/cellulitis and lymphoedema?

A

cellulitis can be a cause or a complication of lymphoedema
lymphoedema increases the risk of cellulitis by 72 times
cellulitis is also linked to hospital admissions and can lead to sepsis and death

133
Q

Clinicians may perform an arterial assessment to rule out which disease?

A

peripheral arterial disease (PAD)

134
Q

What is phase 1 of decongestive lymphatic treatment (DLT)?

A

intensive treatment to improve the severity of the condition and to educate the patient

135
Q

What is phase 2 of decongestive lymphatic treatment (DLT)?

A

aim is for the patient to be able to complete self-management of their condition

136
Q

What skin care products can be prescribed for patients with lymphoedema?

A

bath additives
emollients
steroid creams

137
Q

List some types of exercise that can be beneficial for patients with lymphoedema.

A 
dragon boat racing
yoga
resistance (weights)
swimming
gentle
138
Q

What is manual/simple lymphatic drainage (MLD/SLD)?

A

the use of hand pressure in a particular sequence to facilitate the movement of fluid out of the limb
by moving fluid it reduces the risk of cellulitis and thickening of the tissues
assists in the breakdown of the tissues
relieves discomfort

139
Q

List some types of compression therapy used to manage lymphoedema.

A

bandages
hosiery
wrap-based systems
overnight garments

140
Q

Compression therapy is based on which law?

A

law of Laplace

141
Q

What does the law of Laplace state?

A

the tension within the wall of a sphere filled to a particular pressure depends on the thickness of the sphere
this means that even at constant pressure, the tension within a filled sphere can be decreased simply by increasing the thickness of the sphere’s wall

142
Q

List some other treatments for lymphoedema.

A 
oscillation
negative pressure
inflating boots
kinesiology tape
low-level light
143
Q

What surgery can be used to treat lymphoedema?

A

lymph node transplants

lymphatic venous anastomosis

Therapeutic Nursing (16 decks)

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