Oncology Flashcards
4 most common cancers?
Top 4 cancers with highest mortality?
Breast- Lung- CRC- Prostate
Lung- CRC- Breast- Prostate
Examples of uninterrupted oestrogen exposure increasing breast cancer risk
Late childbearing, Nullparity, Early menarche, Late menopause, Obesity, HRT
2 week referral guidelines for ?breast cancer
30+= Unexplained lump 50+= unilateral discharge/retraction/nipple sign
Consider if skin changes/ Axilla lump
If <30 + unexplained lumo then non-urgent referral
Describe breast cancer screening in the UK
50-70 years
Mammogram every 3 years
What is the breast cancer triple assessment?
What is added if there is a discrepancy?
1- Clinical Dx
2- Bilateral mammography
3- Targeted US biopsy (FNAC)
MRI
Isotopic bone scan or CT if ?Disseminated disease
What is triple -ve breast cancer?
ER -ve HER2 -ve and PR-ve
HARDER TO TREAT
When does BRCA1/2 status impact treatment?
if <50 and triple -ve
Broad indication for surgery in breast cancer?
Wen is neo-adjuvant chemo given?
Number one choice if localised
+/- Post op RT
+/- Neo-adjuvant Chemo if HER-2 +VE or Triple -ve or need to reduce size to enable surgery
How does ER/PR status impact prognosis in breast cancer?
Better if +ve
How does HER2 status impact prognosis in breast cancer?
Worse if +ve
In what breast cancer group is chemotherapy most effective in?
<50
+ Oncotype Dx can help predict extent of benefit
Tumour marker used in breast cancer?
CA15.3
When is RT required to treat breast cancer?
Following conservative surgery by all residual tissue to decrease recurrence
Post-mastectomy if high recurrence risk (mets or >4cm or deep resection margin)
When is endocrine therapy the primary treatment in breast cancer?
ER/PR +ve and slowly progressive
Indications for tamoxifen in breast cancer?
ER/PR +VE
PRE-MENOPAUSAL
taken for 5 years as adjuvant
Indications for Herceptin (Trastuzamab) in breast cancer?
HER2 +VE
12 months but need regular cardiac testing
Indications for Aromatase inhibitors (Anastrazole) in breast cancer?
What are the complications?
POST-MENOPAUSAL and ER/PR +VE
Osteoporotic events therefore do DEXA baseline
Median response to endocrine therapy if breast cancer with metastatic disease?
1-2 years
What factors are considered during management of metastatic breast cancer?
What is not part of the treatments for the above?
Extent, hormone status, HER2 status, symptoms, preferences, performance status
If mets or S4 post-assessment then surgery only has a palliative role. Metastatic solid breast cancer tumour= Wholly palliative.
Information and support available to breast cancer patients
Breast cancer nurse specialist
Psychological support
Lymphedema risk
Early menopause (iartrogenic)
What factors impact the response to endocrine therapy in breast cancer?
Dominant site of the disease- greater response if soft tissue; much reduced if bony or visc mets
An objective response to prior endocrine therapy
Greater duration of previous disease free interval
Most common type of prostate cancer?
Where in the prostate is cancer likely to be?
95% Adenocarcinoma
Peripheral or posterior (BPH likely centric)
Gold standard imaging of choice in ?Prostate cancer
MRI
What do patients with an abnormal PR usually get if ?Prostate cancer?
Transrectal biopsy under US guidance
Side effects of Transrectal biopsy under US guidance?
Blood in urine/semen, infection, discomfort
Ideal imaging method to detect bone mets from prostate cancer?
Radionucleotide bone scan
Describe the The Gleason System of Grading
Sample from the two most predominant areas of prostate neoplasm
Histological grading ranging 2-10
“4+3” Main area is graded as 4 and second area 3
Higher number= Less differentiation= More aggressive
What are the following scores on the Gleason System of Grading: 6 7 8 10 What ISUP grade is high risk?
6- Low (LOWEST POSSIBLE)
7- Intermediate
8- Aggressive
10- Highest
ISUP 4/5 is high risk
Advantages of ISUP score over other Gleason classification scores?
The classification simplified the number of grading categories from Gleason scores 2 to 10, with even more permutations based on different pattern combinations, to Grade Groups 1 to 5
The lowest grade is 1 not 6 as in Gleason, with the potential to reduce overtreatment of indolent cancer
Many classification systems consider Gleason score 7 as a single score without distinguishing 3+4 versus 4+3, despite studies showing significantly worse prognosis for the latter
Cancers commonly causing Bony mets?
Prostate, Kidneys, Lung, Thyroid, Breast (All midline)
Where does prostate cancer commonly metastasise to?
Spine +/- Pelvis
Classic appearance of prostate cancer related bony mets?
Sclerotic
Important discussion points with a patient who has ?Prostate cancer
Sexual function Urinary function Fertility Asymptomatic Comorbidities
When is surgery considered for treatment of prostate cancer?
What iatrogenic side effects can this have?
Radical prostatectomy with curative content if T2 (confined to prostate) or less
Impotence
What is the intent of Transurethral resection of the prostate?
Palliative
Side effects of Radiotherapy treatment in prostate cancer?
Dysuria, rectal bleeds, diarrhoea, impotence, incontinence
General role of radiotherapy in prostate cancer treatment?
Can be alternative to surgery if T1/T2
Adjuvant
Palliative if persistent bone pain
What is brachytherapy?
When should this be avoided in prostate cancer?
Interstitial implantation of radioisotopes (form of radiotherapy)
Best if fewer comorbidities as less risk of impotence
Avoid if significant urinary symptoms (can exacerbate)
Indications for hormone therapy to treat Prostate cancer?
Advanced disease (or with radiotherapy if localised)
General side effects of using hormone therapy to treat Prostate cancer?
Reduced muscle bulk
Wx gain
Sexual dysfunction
Increased risk of DM
How do LHRH and GnRH antagonists work to treat prostate cancer?
Side effects?
Reduce testosterone
Medical castration
Can exacerbate symptoms if there is a tumour flare
What hormone therapy is rarely the best option to treat prostate cancer?
Oestrogen induced LHRH inhibition
Prognosis of prostate cancer if:
1) Local
2) Radical surgery/RT
3) Metastatic
1) Local- 4.5 years
2) Radical surgery/RT- 85% live 10 years if treated
3) Metastatic- 3.5 years
Role of chemotherapy in prostate cancer treatment?
Example regimen?
Adjuvant to increase QoL and Survival Cytotoxic Docetaxel (+prednisolone)
Is small cell or non-small cell the most common type of lung cancer?
Non-small cell 82%
Most common types of NSCLC?
Squamous cell -> Adenocarcinoma -> Large cell -> Other (Carcinoid, mesothelioma, sarcoma etc)
General features to differentiate between squamous cell and adenocarcinoma lung neoplasms?
SCC- Central, close to bronchi, SMOKERS GET THIS, Secrete PTHpp therefore hypercalcaemia
Adeno- Peripheral, EGFR and ALK mutations (drug targets!), non-smokers, women, asbestos
General features of small cell lung cancer?
How responsive are they to chemo/RT?
Aggressive, rapid growth, mets likely before Dx, neuroendocrine cells (SIADH, ACTH-Cushing’s, Lambert-Eaton), marker= Bombesin
Good response to Chemo/RT but relapse quickly
Indications for a 2 week lung cancer referral
Unexplained haemoptysis in >40
CXR suggesting cancer
> 40 + 2 of cough/fatigue/SOB/Chest pain/Wx loss/Smoker
Role of bronchoscopy in lung cancer Dx?
Biopsy
End brachial US to biopsy lymph nodes in the mediastinum
What investigation is essential for lung cancer staging?
CT as allows an assessment of disease extent
When is PET indicated in ?Lung cancer?
If thought to be operable
Usually after CT to make sure distant mets arent missed
Role of pulmonary function tests in assessing lung cancer
Important in deciding whether an individual is fit for lung cancer surgery (alongside cardiopulmonary exercise training)
Role of sputum cytology in assessing lung cancer
Malignant cells in ~80%
In terms of TMN staging, when is trimodality treatment indicated in lung cancer?
Ipsilat bronchopul and hilar nodes (N1)
Ipsilateral mediastinal or subcranial (N2)
What Nodal involvement would usually indicate inoperable lung cancer?
Contralateral mediastinal/hilar/supraclavicular
S4 lung cancer prognosis
6 months
Role of Chemotherapy in treating SCLC
Good response. Usually palliative though as relapse is v common within 12 months
Common mets in SCLC? What is done to ameliorate this?
Brain mets therefore receive prophylactic cranial irradiation
Role of RT in treating SCLC
Treat primary tumour
Prophylactic cranial irradiation to prevent brain mets following good chemo response
Palliative id advanced
Role of surgery in treating SCLC
Inappropriate in vast majority.
Needs adjuvant CT/RT if used.
Role of surgery in NSCLC
S1 or S2
Adjuvant RT if +ve surgical markings
Adjuvant CT if nodal/larger
General CI for surgery in NSCLC
Mediastinal involvement
When is RT a good choice for NSCLC?
If not suitable for surgery or palliative