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A recent study found diverticulitis has been on the rise in this country since the late 1990s. It now accounts for about 300,000 admissions each year for inpatient care.

Dr. Christian Mayorga, a gastroenterologist with Parkland Hospital System, explains this colon problem that can cause pain, obstruction and fever. 

Stella M. Chávez / KERA News

In the 1966 movie Fantastic Voyage, a submarine crew is reduced to microscopic size and injected into the blood stream of an injured diplomat. The goal: to save his life.

Moviegoers were promised a stunning experience that would take them where no human or camera had ever been.

That was, of course, science fiction.

But, on Wednesday, you could take a different kind of voyage: a trip through a giant inflatable replica of a human colon -- 20 feet long, 12 feet high.