Updated

Former Philadelphia Phillies catcher and fan favorite Darren Daulton has been diagnosed with glioblastoma, an aggressive and malignant form of brain tumors.

Daulton, 51, had a pair of brain tumors surgically removed last month.

Tony Perri, the president of the Darren Daulton Foundation, posted an update on the foundation's web site on Wednesday.

"Darren has been diagnosed with a Glioblastoma ("GBM"), a form of brain cancer. He has returned to his Clearwater area home to continue recuperating amongst his immediate family and friends," the statement read.

"He will eventually begin treatments in Florida. Darren and his family wish to thank everyone for their loving support throughout this difficult time. He is deeply touched. In typical fashion, he again said, 'Right on; Fight on.' Darren and his family request that everyone respect his privacy and that of his family during this period of time."

Daulton began his major league career in 1983 and retired in 1997, playing every season with the Phillies and splitting the last year with the Florida Marlins. He was a career .245 hitter with 137 homers and 588 RBI.

His best season came in 1992, when he had career bests of 27 homers and 109 RBI. During the Phillies' 1993 NL championship season, Daulton had 24 homers and 105 RBI.