Ever wonder how archeologists or medical examiners can determine the sex of a long-buried skeleton? Nowadays, this can be revealed through a DNA test, but even before DNA testing, a solid knowledge of anatomy could usually separate the Jane Does from the Johns.
A hernia is a condition in which a part of an internal organ, such as the intestine, pushes through a weak spot in a muscle, usually the abdominal wall or groin. Although some hernias are difficult or impossible to see from the outside, others cause a visible lump.
Colon cancer (or colorectal cancer which includes cancer that begins in the rectum) -- used to be considered an older person’s disease, like arthritis or prostate cancer. This has changed dramatically in recent years.