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肝内脂肪超过肝重7％便是脂肪肝,甚者达40％～50％,主要是甘油三酯蓄积。肝呈米黄色、灰黄色,组织片苏丹Ⅲ染色见肝细胞内红色脂滴致肝细胞肿大而核被挤向周边。急性及早期脂肪肝,TG及胆固醇以微粒分散于肝细胞浆内,称微滴型脂肝。糖尿病脂肝核内糖原沉积如泡状,不要误为脂滴。 脂肪肝发生机制尚未清楚,大致有下列一种或数种因素:①总热量高且脂肪或糖过量,或进入肝内脂肪酸超负荷;②低蛋自或肝内载脂蛋白形成不足致使脂肪滞留肝内;③阿内氧化脂肪酸能力下降或者合成脂肪酸增多。具体原因有肥胖、糖尿病、
Liver fat than liver weight 7% is fatty liver, worse than 40% to 50%, mainly triglyceride accumulation. Liver was beige, gray yellow, tissue film Sudan Ⅲ staining see red lipid droplets within the liver cells caused by enlargement of the liver cells and the nucleus was squeezed to the periphery. Acute and early fatty liver, TG and cholesterol particles scattered in the liver cytoplasm, said lipid droplets of lipid liver. Diabetic fatty liver liver glycogen deposition bubble-like, do not mistaken for lipid droplets. The pathogenesis of fatty liver is not yet clear, generally one or more of the following factors: ① total heat and fat or excess sugar, or into the liver fatty acid overload; ② low egg or liver lipoprotein formation caused by inadequate retention of fat Intrahepatic; ③ Ane oxidized fatty acid decreased or increased fatty acids. Specific reasons are obesity, diabetes,