His face looks like he is taking a higher dose of
prednisolone to me. "Moon face" is an unavoidable side effect of this drug, it is used slow the onset of Parkinson's and helps with bowel cancers, particularly postoperative.
Having volunteered in hospices for many years I know all the drugs that delay death.
Looking again with a brighter screen the pants legs are an optical illusion but the face is not well. It's so easy to cause cancers, in his world its highly likely he was given some mutagenic though at his age, naturally occurring is at least as likely.