Keywords : appendicitis, appendicolith, appendix, color Doppler, Crohn’s disease, cul de sac fluid, duodenal atresia, duodenal stenosis, hemorrhagic ovarian cyst, HPS, hypertrophic pyloric stenosis, intestinal malrotation, lower pole, mesenteric vein, moiety, ovarian torsion, pediatric ultrasound, Pelvic Ultrasound, pylorospasm, renal duplication, SMA, SMV, superior mesenteric artery, superior, ureterocele, volvulus, whirlpool sign