This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Liver, Subject name: Pathology
Microvesicular fatty liver is caused by - 
Select and explain. 
A. DM, B. Valproate, C. Starvation, D. IBD
B: Valproate
Answer: B: Valproate 
Explanation: Ans. is 'b' i.e., Valproate Steatosiso Accumulation of triglyceride fat droplets within the heaptocytes is known as steatosis or fatty liver. It may be of two types -1. Microvesicular steatosis - Multiple tiny droplets accumulate that do not displace the nucleus.2. Macrovasicular steatosis - A single large droplet accumulates that displaces the nucleus.Causes of steatosisMicrovesicularMacrovesicularo Reye's syndromeo Acute fatty liver of pregnancyo Jamaican vomiting sicknesso Drugs - valproic acid, tetracycline, nucleoside analogueo Wolman's diseaseo Lysosomal acid lipase deficiencyo Congenital defects of urea cycle enzymeso Early stage of alcoholic cirrhosiso Chronic viral hepatitiso Alcoholic liver diseaseo DM - insulin resistanceo Lipodystrophyo PEM, starvationo Dysbetalipoproteinemiao TPN, Jejunoileal bypasso Inflammatory bowel diseaseo Syndrome x (obesity, DM, hypertriglyceridemia)o Drugs - CCBs, synthetic estrogens, nucleoside analogues