In these regions within twenty years many countries will face a situation where the largest population cohort will be those over 65 and average age approach 50 years old. The Oxford Institute of Ageing is an institution looking at global population ageing.
The appendix is attached to one end of your large intestine, it is a narrow tube-shaped sac. It is about the size of your longest finger. About 3 in. (7.6 cm) long and 1/4 in. to 1 in. (.64-2.54 cm) thick. The appendix is attached to one end of your large intestine, it is a narrow tube-shaped sac. It is about the size of your longest finger.   About 3 in. (7.6 cm) long and 1/4 in. to 1 in. (.64-2.54 cm) thick.
At sonography the normal appendix is less frequently visualized, with results varying between 0-82% [1], reflecting the operator dependency of sonography. One of the most important imaging criteria in the evaluation of appendicitis is the outer diameter of the appendix. Although an overlap of appendiceal diameters in normal and inflamed appendices has been reported, a threshold value of 6-7 mm is most commonly used [1]. (Fig. 1).