64-Dr Ahmed Esawy imaging oral board of pediatric imaging part II pyloric stenosis congenital lobar emphysema hirshsprung disease colonic atresia ileal atresia bockdalek hernia anal atresia meconium peritonitis meconium aspiration syndrome hyaline memberane disease aspiration pneumonia atrial septal defect ventricular septal defect fallot retralogy detroposition dextrocardia situs inversus achondroplasia osteogenesis imperfecta osteopetrosis necritising colitis meconium aspiration syndrome pulmonary hypoplasia RDS respiratory distress syndrome pulmonary interstitial emphysema transient tachypnea varicella pneumonia pneumatocele dermiod cyst nasopharyngeal lymphoma nasopharyngeal carcinoma adeniod retropharyngeal abscess sacrococcygeal teratoma patent urachus emphysema