The liver demonstrates mild diffuse increased echogenicity, most consistent with fatty liver infiltration or fibrosis." what does this mean?

Distinguish diseases: Distinguish fatty liver (steatosis) from fatty liver with abnormal liver tests (steatohepatitis). Best to start with a weight loss diet based on calorie and fat restriction, avoid alcohol, control diabetes & cholesterol (if present). Your doctor will likely want to monitor your labwork, image the liver, & rule out other diseases that can mimick the pattern of liver tests seen with fatty changes.