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Background and Objective: Nonalcoholic fatty liver disease is the most common cause of liver disease worldwide and it is defined as a disorder of excess fat accumulation in the liver. This study was done to determine the prevalence of fatty liver among overweight, obese and normal children.
Methods: This historical cohort study was conducted on 90 children ages 5 to 13 years old in Taleghani pediatric theching hospital in Gorgan, north of Iran during 2014. Subjects according to Body Mass Index (BMI) classified into obese (95%>BMI), over weight (85-95% BMI) and normal (5-85% BMI). Childern were matched for age and sex. Liver enzymes (ALT Alanine aminotransferase and AST (Aspartate aminotransferase) and lipid profile includingTriglyceride: TG (High Density Lipoprotein: HDL and (Low Density Lipoprotein: LDL were measured and fatty liver evaluated based on sonographic parameters by a radiologist who didnot know children's BMI.
Results: The prevalence of fatty liver was 23.3% in obese children that was non- significantly higher than normal (16.7%) and over weight (16.7%) children. The prevalence of fatty liver was not significantly different between two sexes. AST was significantly higher in children with normal BMI in compared to obese and over weight children (P<0.05). The highest and lowest level of cholesterol was seen in obese and normal children (P<0.05).
Conclusion: This study showed that the prevalence of fatty liver non-significantly was higher in obese children in comparision with normal and over weight children.

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Arachnoid cysts have primary and secondary types. The prevalence of Arachnoid cysts is about 1% of all tumors in cranial cavity. Based on anatomic position, arachnoid cyst can cause different clinical manifestations including hemiparesis, increase intracranial pressure, macrocephaly and isolated headache and stop body growth. The natural course of the disease is not exactly clear. Some of patients have no symptoms during life and some of them may show some symptoms after a while. This case report is about a 10 years boy who had no sign except generalized headache. Anatomic position of the cyst was in right temporal lobe of the brain on the temporal, parietal and the great wing of sphenoid bones. Arachnoid cyst diagnosed through MRI and CT-Scan. Patient treated with ibuprofen for three days and then patient followed up to treat with surgery method when other clinical symptoms appeare in the patient.