Proctology is the study and treatment of disorders of the rectum, anus, colon and pelvic floor. A proctologist is a physician who treats problems such as hemorrhoids, birth defects of the anal area, cancer of the colon and rectum, and injuries to the anus. Some of these conditions may require surgery. Also treated by this specialist are anal fissures, fecal incontinence, perianal warts or severe constipation conditions.

Doctor density varies by specialty and location. Pennsylvania has 4 practicing proctologists. Broken out by city, proctology doctor density in Bethlehem is 1, in Elkins Park is 1, in Philadelphia is 1, in Quarryville is 1, and in West Reading is 1.

Pennsylvania was the second state admitted to the union in 1787, and has a rich historical background. The population of Pennsylvania is 12,429,616, and its capital is Harrisburg. Historical sites include Valley Forge National Historical Park, the Liberty Bell, Independence Hall, and the Betsy Ross House. Visit the Andy Warhol museum in Pittsburgh, the American Civil War Museum in Gettysburg, or tour the Indian Caverns in Spruce Creek.

According to 2005 Census estimates, Pennsylvania has a population of 12,429,616. Of this population, 2,754,906 are under the age of 18 and 1,887,277 are at or above the age of 65.