The Risk Factors of Nonalcoholic Fatty Liver Disease in Morbidly Obese Patients Undergoing Bariatric Surgery in Iran

Table 1

Grading of nonalcoholic fatty liver on ultrasonography.

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Mild liver steatosis (grade I)

(i) Least diffuse increase of liver echogenicity

(ii) The liver appears brighter than the kidney cortex

(iii) Standard visualization of intrahepatic vessel walls

Moderate liver steatosis (grade II)

(i) Moderate diffuse increase of liver echogenicity

(ii) A little defective visualization of the intrahepatic vessels

Severe liver steatosis (grade III)

(i) Severe increase of liver echogenicity

(ii) Poor or lack of visualization of intrahepatic vessels

(iii) Poor penetration of the posterior segment of the right lobe of the liver

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