The diary room bit has not been shown, & won't be, reportedly, but in BB there is no other way of getting somebody away from the others for a private conversation, is there, short of going in and taking someone away which would be much worse.
(Mind you the Mail has a photo - how did they get that? )
"It is her third such cancer scare, following tests for bowel cancer in 2006 and ovarian cancer in 2004. On those occasions she was given the all clear." All of that can't have been for publicity - she's obviously had dodgy symptoms for a long time.
I wish her a full recovery anyway.