Cancer Care Flashcards
Which tumours most commonly metastasise to the brain?
lung (most common) breast bowel skin (namely melanoma) kidney
What are the non-modifiable risk factors for breast cancer?
Female
Age 50-70
Genetics - BRCA1&2, ERBB2/HER2, TP53
Increased Oestrogen exposure - early menarche, late menopause (increased number of menstrual cycles)
What are the modifiable risk factors for breast cancer?
Oestrogen exposure - nulliparity, later age of pregnancy, HRT, COCP
Ionising radiation exposure
LIfestyle - obesity, alcohol, smoking
What are the 3 types of invasive breast cancer?
Invasive ductal carcinoma (75-85%)
Invasive lobular carcinoma (10%) (older women, more difficult to detect)
Other subtypes (5%), such as medullary carcinoma or colloid carcinoma
What is a carcinoma in situ? What are the two types of breast CIN?
Malignancies that are contained within the basement membrane tissue. Pre-Malignant and rarely symptomatic
I.e. high grade dysplasia
Ductal (most common) and Lobular
What is ductal carcinoma in situ?
malignancy of the ductal tissue of the breast that is contained within the basement membrane
What is lobular carcinoma in situ
malignancy of the secretory lobules of the breast that is contained within the basement membrane
more at risk of becoming invasive
What is the management of ductal and lobular carcinoma in situ?
Ductal = wide local excision
Lobular = Monitor if low grade
What is the clinical presentation of a breast carcinoma?
Lump! (craggy, irregular, matted, non-tender, immobile)
Nipple changes - pagets = itchy, red, crusty, retraction, abnormal discharge
Skin changes - swelling, peau d’orange
Mastalgia
Lump in axilla
What is the triple assessment for breast cancer?
Examination
Imaging - mammogram
Histology or cytology - USS biopsy
What are the two types of biopsy that can be taken from a breast?
FNAC - quick n easy but if malignant have to do a core biopsy anyway
Core = longer and more painful but gives receptor status and grading
Describe the vascular supply to the breast
External and internal mammary arteries give rise to intercostal, internal thoracic
Branch from axillary?
What are the localised complications of breast cancer?
Localised inflammation = fibrosis of suspensory ligaments and lactiferous ducts
Invasion of nearby tissue
Lymph node involvement = peau d’orange as lymph builds up but suspensory ligaments don’t allow swelling
Where are the 6 most common places for breast cancer to spread?
Bone Brain Lung Liver Adrenal Ovary
Describe the surgical options for breast cancer treatment
Mastectomy +/- reconstruction
Wide local excision - excision of the tumour ensuring a 1cm margin of macroscopically normal tissue is taken along with the malignancy.
Axillary clearance
Then give adjuvant radiotherapy
What are the indications for a mastectomy?
multifocal disease
high tumour:breast tissue ratio
disease recurrence
patient choice
risk-reducing cases
When would hormonal therapy be used to treat breast cancer?
malignant non-metastatic disease as an adjuvant therapy
What are the three drugs used for hormonal therapy when treating breast cancer?
Aromatase inhibitor (Letrozole) - prevents oestrogen production. Post menopausal women only
Tamoxifen - Oestrogen receptor antagonist. Pre and post menopausal women
Immunotherapy - Herceptin if HER2 positive, a monoclonal antibody
What are the positive and negatives of aromatase inhibitors?
+ves = lower risk of VTE
-ves = increased risk of osteoporosis
What are the positive and negatives of Tamoxifen?
+ves = Bone protection
-ves = Increased risk of VTE and endometrial cancer
What are the main types of lung cancer and where are they located?
Small Cell Lung Cancer (neuroendocrine) = Bronchial Mucosa
Non Small Cell Lung Cancer = Squamous, large cells, Adenocarcinomas
What are the non-modifiable risk factors for lung cancer?
Age >75
Male
Family history
What are the modifiable risk factors for lung cancer?
Lifestyle - Smoking!!! (adenocarcinoma)
Chronic lung disease - COPD, Pulmonary Fibrosis, TB
Radiotherapy
Toxin exposure - Asbestos (mesothelioma), Radon gas
What are the three types of NSCLC? How do they differ from SCLC?
Adenocarcinomas
Squamous Cell Carcinomas
Large cell carcinomas
Metastasise but DON’T produce hormones
SCLC met quickly, grow centrally and quickly
Which hormones can be produced by SCLC?
ACTH (Cushing’s)
ADH (SIADH)
(LEMS is also a thing but not hormones is instead antibodies)
Where does a mesothelioma arise from?
Lining of the pleura
What are the symptoms of a lung cancer?
Respiratory = cough, SOB +/- blood, recurrent chest infections, chest pain
Cancer = Weight loss, anorexia, lymphadenopathy, cachexia
NSCLC = ? hoarse voice +/- horner’s, ?hypercalcaemia
What are 4 signs of a lung cancer?
Clubbing, monophonic wheeze, consolidation, collapse
What are the bedside tests for a lung cancer?
Baseline obs
Sputum sample for cytology
PFT/peak flow
What are the blood tests for a lung cancer?
Carcinoembryonic Antigen for NSCLC
Baseline bloods otherwise (FBC, U&E, CRP, LFT, Bone profile)
What imaging should be done to investigate a lung cancer?
CXR - mass, mediastinal widening, hilar lymphadenopathy, lobar collapse
Biopsy - EBUS or bronchoscopy or CT guided
When should someone be referred for an urgent CXR (ie 2WW)?
> 40 + 2 red flags: cough, fatigue, SOB, chest pain, weight loss, anorexia OR ever smoked + 1 red flag
OR
> 40 + any of: recurrent chest infection, unexplained clubbing, thrombocytosis, chest signs, persistent supraclavicular lymphadenopathy
OR
> 40 and unexplained haemoptysis
What is a pancoast tumour?
A non-small cell lung cancer
Leads to compression of the brachiocephalic vein, sympathetic chain, recurrent laryngeal + phrenic nerves, subclavian artery
What are the non-modifiable risk factors for colorectal cancer?
Genetics - HNPCC (endometrial, ovarian, other GI), FAP (AD in APC gene), 1st degree relative <45 = familial colorectal cancer
Male
Age >70
What are the modifiable risk factors for colorectal cancer?
Lifestyle - smoking, obesity, alcohol
Diet - red meat, processed meats, low fibre
What is the pathophysiology behind colorectal cancer?
Polyp - Adenoma - Adenocarcinoma (most common)
Where are the most common locations for colorectal cancer?
Rectum
Sigmoid Colon
Rest of bowel
What is the clinical presentation of bowel cancer?
Blood in stools - fresh red = rectum, darker = partially digested so from higher +/- anaemia
Frequent change in bowel habit i.e. diarrhoea or constipation cycling v quickly
Tenesmus - feeling of incomplete emptying
Abdo/PR mass
How does the clinical presentation of bowel cancer change depending on the location of the tumour?
Left sided = pain
Right sided = bleeding +/- iron deficiency anaemia, weight loss, weakness
What are some trigger questions to ascertain late GI effects?
Woken at night?
Have to rush to toilet?
Loss of control?
Preventing from living a good life?
Which patients presenting with a suspcision of bowel cancer should be 2WWed?
> 40
PR bleeding
Change in bowel habit for >6 weeks
What are the blood tests to do to investigate bowel cancer?
FBC (anaemia)
CEA - not sensitive or specific
Tumour markers
What imaging should be done to investigate bowel cancer?
Colonoscopy + biopsy
MRI to see extent of primary tumour
CT for staging
What is the Duke’s Criteria?
A - tumour confined to bowel wall
B - tumour extends across bowel wall
C - Nodes at site of primary growth
D - Proximal nodes
What is the T staging of colorectal cancer?
T1 = submucosa T2 = through submucosa and across bowel wall T3 = into serosa T4 = through serosa into peritoneum
What is the surgical management of colorectal cancer?
Location dependent - anterior resection or hemicolectomy (R, L, Extended R)
When is radiotherapy appropriate for colorectal cancer?
Neoadjuvant
Palliative
When is chemotherapy appropriate for colorectal cancer?
Neoadjuvant
Adjuvant
Mets
Which other drugs could be used as medical management for colorectal cancer?
VEGF inhibitors
EGFR inhibitors
SE = dry skin, acne form rash, pruritus, nail changes
What is a melanoma? What are the 4 different types?
A malignant tumour arising from melanocytes
Superficial spreading (most common)
Nodular
Lentigo Maligna
Acral Lentigous
What are the non-modifiable risk factors for melanoma?
FHx
PHx
Increasing age
Fitzpatrick skin type 1 & 2 - Red/blonde hair, lots of moles/freckles, burns easily
What are the modifiable risk factors for melanoma?
Organ transplant recipient/immunosuppression
Lifestyle - tanning beds, sunburn esp if blisters in childhood
Give 4 differentials for a melanoma
Naevus
Pigmented Basal Cell Carcinoma
Sebhorrhoeic Keratosis
Dermatofibroma
How does a melanoma look on examination?
‘Ugly duckling’
A - asymmetrical (not a mirror image in all 4 quadrants)
B - Borders = irregular e.g. notched/scalloped
C - Colour Change +/- bleeding
D - Diameter >6 mm
E - Evolution - change in size, shape and elevation
How does the ABCDE of a melanoma help with diagnosis and management/
Goes into a weighted 7 point checklist
3+ points/ strong clinical concern = 2WW
2 points = Red flags, change in size, irregular border or colour
1 point = >7mm, inflammation, oozing or crusting