A 48-year-old obese male (BMI 34 kg/m²) with type 2 diabetes mellitus and hyperlipidemia presents with right upper quadrant discomfort and fatigue. Laboratory studies show ALT 78 U/L, AST 52 U/L, triglycerides 340 mg/dL, and negative viral hepatitis and autoimmune panels. Non-contrast CT abdomen is performed. The structure marked **A** in the diagram shows diffusely decreased hepatic attenuation measuring 28 HU (normal 55–65 HU), with splenic attenuation of 52 HU. Intrahepatic vessels appear relatively hyperdense compared to the parenchyma. Which of the following best describes the pathophysiologic basis and diagnostic significance of this radiologic finding?
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