The anteroposterior diameter of the left lobe of the liver, 76 mm, is not within the normal range. In a normal-sized adult liver, the anteroposterior diameter of the left lobe of the liver is 41-74 mm. 76 mm anteroposterior diameter of the left lobe of the liver is outside the normal range. Although the normal range of ultrasound is not absolute, it may exceed the normal range due to factors such as body size. If the examinee’s body type is larger than average, exceeding the normal range may not be a problem. However, if the subject is of normal size, extra attention should be paid to the thickening of the left lobe of the liver, which requires further testing of various liver function indicators. There are different reasons for the thickening of the liver lobe, the common ones are: fatty liver, the patient is obese, eating too much high-fat and high-calorie food, which will cause excessive accumulation of fat in the liver cells and enlargement of the liver; acute attack of hepatitis, which is caused by compensatory hyperplasia of the liver cells leading to the enlargement of the liver. The anterior and posterior diameters of the left lobe of the liver are not in the normal range, so you should improve the relevant examinations and analyze your condition under the doctor’s comprehensive consideration. Regular physical examination, balanced diet, reasonable rest and exercise.