Doctors speculate on Castro surgery; Most in U.S.predict recovery.(NATION)

Byline: Joyce Howard Price, THE WASHINGTON TIMES

U.S. gastroenterologists say they would need more information to diagnose the undisclosed medical condition that caused Fidel Castro's "sustained" intestinal bleeding, but diverticulosis is a strong possibility.

The Cuban leader underwent "complicated" surgery Monday.

Diverticulosis is a condition marked by weakened spots in the lining of the colon that form sacs or pouches, which can become inflamed and bleed. It requires surgery, and patients sometimes have a large segment of their colon removed to stop life-threatening bleeding.

"It sounds like he had a pretty extensive internal hemorrhage …