May 20 4:26 PM PT5:26 PM MT6:26 PM CT7:26 PM ET12:26 AM GMT8:26 AM 北京时间-A benign, baseball-size tumor has been removed from the chest of Iwebema. Analysis: Coach Ken Whisenhunt says the surgery was performed on Monday. The tumor was discovered during routine X-rays before the start of minicamp April 30. Trainer Tom Reed says Iwebema showed no symptoms and that the condition could have been life-threatening had it gone undetected. Iwebema was a fourth-round draft pick out of Iowa in 2008.