The average salary is 24,000, but most people earn less. Most people have an above average number of feet. In his fourth lesson of a weekly series, author Michael Blastland cracks the myth of the average.ith incomes, to take another example, many people are aware that the average in the UK (also known as the mean) is about 24,000 a year (in fact, about 463 a week).
Unlike a colonoscopy, however, the 'range' of a sigmoidoscopy is not as good; whilst a colonoscopy can visualise the entire large bowel, a sigmoidoscopy can only visualise as far as the sigmoid colon (it is therefore primarily used to visualise the rectum and parts of the sigmoid colon).nlike a colonoscopy, however, the 'range' of a sigmoidoscopy is not as good; whilst a colonoscopy can visualise the entire large bowel, a sigmoidoscopy can only visualise as far as the sigmoid colon (it is therefore primarily used to visualise the rectum and parts of the sigmoid colon).
Flexible sigmoidoscopy is an examination of the inside of the rectum and the lower part of the colon (large intestine).A flexible, lighted tube called a sigmoidoscope is inserted into the rectum and advanced into the colon, allowing the doctor to examine the lining of the lower 30 inches of the colon.lexible sigmoidoscopy is done for several reasons. One is to evaluate symptoms, such as rectal bleeding, abdominal pain, or change in bowel habits. Another reason is to detect colon polyps or colon cancer. Most colon cancer begins in polyps (benign growths in the lining of the colon).