well i stuck to the pre op diet, and my liver was still quite large, but they were still able to do the op by keyhole, when i spoke to the surgeon, he told me that sometimes the liver doesnt shrink, but dont worry about it hun, as i was worried sick they wouldnt be able to do the op if my liver hadnt shrunk, but the dr said he has only ever had to postpone an op once do to the liver being over sized but it is very very rare for them not to do the op, it just makes it harder to move the liver out of the way if it is to large but not impossible,