Hey guys, had a pediatric pt today that has me questioning getting US in kids suspected of appendicitis. Classic story, periumbilical pain radiating to RLQ, waxing/waning. A/w nausea. Tenderness at McBurney's, + hopping tenderness. Slightly elev white count (in teens), afebrile. Thin kid, good for US, which could not see tip of appendix, but normal caliber of portion seen, compressible, with no evidence of inflammation or free fluid. I was skeptical, since the story was textbook, so I CT'd the pt, which showed a dilated, fluid-filled appendix and surrounding FF. Same radiologist read both studies. Anyone else experience such vast differences b/t US and CT? Maybe has to do with radiologist experience? It has me second-guessing ever getting US on kids.