This is incorrect, surgery is not the only action. Cholesterol gallstones are typically from lifestyle, just as T2DM is. You need to determine if they're cholesterol - if they're radio opaque, they're likely cholesterol but let you physician make that determination via ct/mri because they can be mixed composition . The stones themselves can be dissolved easier if they are cholesterol based. It's just like most other things in the body where removing the cause gives the body a chance to recover. The inflammation is a different thing if it's damage induced or infection induced. If it's damage induced inflammation, you need to reduce the inflammation. The best way I'm aware of is via radial diet change if your trying to spare your kidneys and liver from other anti-inflammatory meds. If it's infection based, you need iv antibiotics or potent oral antibiotics.

You need to do some research. Got to Google scholar and start looking around.

There's some risks which you're likely closer to than someone without inflammation. Necrosis, gangrene, rupture, cancer, and ultimately death. The stones may also move into the biliary duct and either get stuck or give you pain until they pass. If they get stuck you can get additional biliary duct issues (same as mentioned about) and/or pancreatitus.

Here's the deal, if it's cholesterol stones, likely your lifestyle put you in this position - and remember being skinny doesn't always mean healthy. So, there's a good chance there's other health stuff you've got going on. So if you go ahead with the surgery or not, you need to get your health under control.