Archaic medicine

Rico says he's been required by his physician to undergo another colonoscopy. (And they better find the Lindbergh baby up there, after all the undignified prep work... Okay, okay, so they already found the damned baby; it's just a phrase.)
But you would think (and Rico does) that, with all the advances of medical technology, they would have developed some less invasive method of looking for things up your ass... (And so they have, as this article proves.)