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05/31/11 9:49 PM ET

Carter's brain tumors inoperable, doctors say

NEW YORK -- Hall of Famer Gary Carter is suffering from Grade 4 glioblastoma and his brain tumors are inoperable, according to doctors from the Duke University Medical Center.

"The results of the biopsies performed on the tumor in Gary Carter's brain have conclusively shown that Mr. Carter has a glioblastoma," Duke doctors wrote in a statement released Tuesday evening. "While surgery is not a good option given the location of the tumor, we discussed an aggressive treatment plan with Mr. Carter and his family, which will include chemotherapy and radiation."

Carter's daughter, Kimmy Bloemers, originally wrote Saturday on the family's website that doctors believed the tumors were inoperable.

"Dad's tumor is not operable, as it is like a snake of tumors that are connected across the back of the brain," Bloemers wrote. "The biggest tumor is on the left side of the brain."

Earlier this month, doctors found four small tumors on Carter's brain and announced that he would undergo further tests at Duke Medical Center in Durham, N.C. Doctors performed biopsies on a single tumor last Friday and announced that it appeared to be malignant.

Glioblastoma affects the brain and central nervous system, and is characterized by a fast-growing malignant brain tumor.

"While we are saddened by the news we received today, we take comfort in the overwhelming support and prayers that have been extended to our family during this difficult time," the Carter family wrote in a statement. "We have boundless faith and hope knowing that the Lord will help see us through the challenging weeks and months ahead. Gary is getting the best care possible and is blessed with an incredible support network including family, friends and loyal fans. Gary was always a fierce competitor on the baseball field and that same tenacity will help him not only fight but win this battle, so please join Team Carter and continue to pray with our family."

Carter's family has been by his side at The Preston Robert Tisch Brian Tumor Center at Duke while he undergoes treatment.

Inducted into the Hall of Fame in 2003, Carter, 57, compiled a .262 career average with 324 home runs and 1,225 RBIs over 19 seasons in the Majors with the Expos, Mets, Giants and Dodgers. Nicknamed the "Kid," he was an 11-time All-Star and a three-time Gold Glove Award winner, helping lead the Mets past the Red Sox in the 1986 World Series.

"The outpouring of support for Mr. Carter has been incredible, and we trust that his many friends and fans will join us in continuing to pray for him and his family," Duke doctors wrote in the statement.

Added Bloemers on the family's website: "This will not be an easy road at all, nor is this a simple battle but WE WILL FIGHT."

Anthony DiComo is a reporter for MLB.com. Follow him on Twitter @AnthonyDicomo. This story was not subject to the approval of Major League Baseball or its clubs.