It would be important to know why you got the cat scan done. Are you having pain? The fact that your gallbladder
is "collapsed" probably means it's empty. It is nothing to be worried about. The gallbladder usually is full and big when you are fasting, but after eating it empties out.
angiomas are benign vessels in the liver that you shouldn't worry about, unless they are very large in size (>5cm), or growing quickly. Most people have them since birth, and don't know about until they get a cat scan for some other reason.
If you are having pain, you should complete your treatment for your current infections and see if it goes away, otherwise you need further evaluation.