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一、脂肪肝的基本概念与分类 脂肪肝(liver steatosis and fatty liver)是一种病理学概念,系指肝内脂肪含量超过肝湿重的5％,或肝活检30％以上肝细胞有脂肪变且弥漫分布于全肝。根据肝细胞内贮存脂滴的大小,分大泡型和小泡型脂肪肝,类脂质沉积病属于特殊类型的小泡型脂肪肝。典型的小泡型脂肪肝罕见,临床多呈急性经过;而大泡型脂肪肝则呈慢性经过,常伴有脂肪囊肿、脂肪性肉芽肿、炎症、坏死和纤维化。通常所述脂肪肝主要指慢性弥漫性大泡型为主的脂肪肝。
First, the basic concepts and classification of fatty liver Fatty liver (liver steatosis and fatty liver) is a pathological concept refers to the liver fat content of more than 5% of liver wet weight, or more than 30% of liver biopsy fatty liver cells And diffusely distributed in the whole liver. According to the size of lipid droplets stored in liver cells, sub-vesicular and vesicular fatty liver, lipid-like lipidosis belongs to a special type of vesicular fatty liver. The typical small vesicular fatty liver is rare, the clinical mostly acute after; while the big bubble fatty liver is chronic, often accompanied by fat cysts, fatty granulomas, inflammation, necrosis and fibrosis. Usually the fatty liver mainly refers to the chronic diffuse bubble-based fatty liver.