Hi Via and welcome to this corner of the Community although always sorry to see folks joining us. I am Mike Thehighlander and I help out around our various blood cancer groups.
I was diagnosed in 1999 with a rare, incurable but treatable type of Non Hodgkin’s Lymphoma Stage 4a and although my Lymphoma ‘type’ is different I have experienced ‘the’ treatment journey but not necessarily the exact same drug mix.
You can actually put PMBCL into the search 
tool near the top abd have a look at the older posts.
Do also check out Lymphoma Action, a small but very active UK Lymphoma Specific Charity who have lots of good information, videos and run regular regional online Lymphoma support groups and indeed a very great Lymphoma Buddy Service.
Always around to chat.
