Columnist Lewis Grizzard was hospitalized Saturday after suffering an aneurysm of the right kidney, a hospital official said.
He was in critical but stable condition, and his condition was not considered life-threatening, said Renee Kopowski, a spokeswoman for the Florida Hospital.
The 46-year-old humorist for the Atlanta Journal-Constitution was admitted to the hospital late Thursday after suffering pain in his right side, his aides said.
An aneurysm occurs when a blood vessel weakens in one spot and bulges or "bubbles." It was the second aneurysm Grizzard has suffered since undergoing heart surgery to replace a defective valve last March.
In December, he was treated at Emory University Hospital in Atlanta for a bleeding abdominal artery. Earlier, doctors determined his spleen was damaged but decided not to remove it.