The TV presenter revealed her original diagnosis last September, but has since discovered another lump – prompting her to check in with her doctor and request a mammogram.
Taking to Instagram on Monday, Cawood, 50, admitted the position of the fresh lump, located on a previously unaffected breast, is a cause for concern – but could be a direct consequence of her ongoing hormone therapy.
She said: 'I'm just going to tell you guys something – I've found another f***ing lump. I went to the doctors and she could feel it too.
'Our hunch, me and the doc, is it's because your boobs change, the composition of your boobs change quite a lot when you're on hormone therapy.
'But I've got a mammogram tomorrow – it's not a recurrence, so it would be another primary cancer, but I haven't got the time, so will you all say a little prayer for me tomorrow at three?