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CT scan of a normal appendix in the right lower abdomen. The appendix normally connects with the right colon and contains air (this appears black on the scan). Air in the appendix excludes appendicitis since this means that the appendix is not obstructed or inflamed. For more information see Appendicitis.

Note: Images are shown for illustrative purposes. Do not attempt to draw conclusions or make diagnoses by comparing these images to other medical images, particularly your own. Only qualified physicians should interpret images; the radiologist is the physician expert trained in medical imaging.