Liver hemangioma and gallbladder polyps.

I got an ultrasound scan two days before, found; gallbladder distended,shows few non-mobile mucosal polyps, largest measuring 4mm. Gallbladder wall is of normal thickness. CBD is of normal calibre and also for liver; is normal in shape, size and has uniform echopattern. found liver hemangioma well defined focal nodular hyperechoic lesion of size 2.3*2.3 cms no evidence of intrahepatic biliary ductal dilatation hepatic and portal vein radicals are normal..I had done CT scan before 7months because of stomach pain..there it was found only liver hemangioma 2.1*1.6 cms in size..my doubt is why didn't my last CT scan show gallbladder polyps and how it's showing suddenly now.. is it a problem..and also liver hemangioma size is different now in ultrasound than in CT scan which was done 7 months before.. is there anything to be worried...is it common to have vague pain in right upper part of abdomen.. please guide me..