Breast Cancer Answers

1840 Words8 Pages
1. (a) What percentage of cancer cases in the UK is not due to lifestyle factors? (1 mark) 60% of cancer cases in the UK are not due to lifestyle factors. (b) The article states that in women, cases of lung cancer have increased by 15% to 15,675 since 2002. Calculate the number diagnosed in the previous year. Show your workings. (4 marks) 0.15x 15625= 2351.25 15675 - 2351.25=13323.75 total for previous year (c) Name the two genes that are most notable as risk factors for breast cancer in women and state what the risk factor is if either of these genes is carried by a woman. How does the term penetrance explain why some women with both genes develop breast cancer but not others? (5 marks) Two genes that are most notable as risk factors for breast cancer are BRCA1…show more content…
If individuals recognise warning signs for cancer and seek medical advice their chances of surviving will be much greater. (b) What advances are likely to lead to an improved diagnosis of cancer? Name one likely future advance in cancer diagnosis named in the Main Text. (2 marks) The development of ultrasound known as elastography is being used in the examination of the liver as it is useful for distinguishing between benign and malignant tumors due to its measurement of elasticity in tissues. Infrared radiation has been suggested for a diagnostic technique for breast cancer in the future. (c) Describe very briefly three different imaging methods which may be used for cancer diagnosis. (6 marks) Planar X ray imaging are often used for a quick assessment of a patient and look for large tumours, chest abnormalities and myeloma. MRI imaging is a tomographic technique that produces high quality images in which different tissues appear with different intensity. It can be used to show metastases and staging of tumours. Ultrasound although not suitable for all regions of the body can show tumours and metastases in soft

More about Breast Cancer Answers

Open Document