reducing cancer on ovaries without using chemo.

best advice needed as mum was about to have quadruple heart bypass when a lump was found in her distended stomach which after biopsy showed cancer on ovaries and a few on the......ovium thingy like apparently soft tissue area cant remember what its called??sorry, 2 enormous problems to deal with.

heart surgeon says need to reduce the tumour befoe he can safely do heart op. we dont want to go the chemo route which is all thats on offer. can you help?