I don't know, and what difference does it make?  We all KNOW biden has dementia or Alzheimers or something wrong and that doesn't stop him from getting up in front of a crowd, behind a microphone, and spewing complete nonsense and garbage - - and people actually believe him, that's the worst part.  Not only that, we tolerate the complete blitherings of COMMALA harris whenever she gets NEAR a microphone.  Good Lord.  Ditto Nazi Nannzi.  In America it seems we prefer crackpots.

So, if Putin does have cancer, it's his business, not ours.  We'll find out in time, I'm sure. 

https://www.westernjournal.com/report-putin-suffering-cancer-neurological-disease-now-video-makes-sense/

For some reason, it brings to mind the old Sonny & Cher song "Gypsies, Tramps and Thieves".  Well, we've got all 3 of those covered by our current lunatic administration.