Baseball great Mickey Mantle is back in the hospital after undergoing a debilitating chemotherapy treatment, one of his doctors said Monday night.

However, Mantle’s readmission on Friday does not suggest worsening in his liver condition, Dr. Daniel DeMarco said.

Mantle, 63, underwent a liver transplant June 8 after he was diagnosed with a malignant liver tumor.

DeMarco said Mantle has been undergoing a series of chemotherapy treatments that On Friday, the former New York Yankees star had a second cis-platinum treatment, which cause such unpleasant side ef fects as nausea, vomiting and weakness. Mantle wanted to remain in the hospital throughout the weekend to rest, but he likely will be released today.