| Term | Definition |
| Pyloric stenosis | 0-3 mo |
| Pyloric stenosis | Nonbilious, projectile |
| Pyloric stenosis | MalesĀ» females; palpable olive-shaped mass in epiga~trium: low C1llow K metabolic alkalosis |
| Intestinal atresia | 0-1 wk |
| Intestinal atresia | Food regurgitation |
| Intestinal atresia | "Double-bubble" sign, Down syndrome |
| TE fistula | 02 wk |
| TE fistula | Food regurgitation |
| TE fistula | Respiratory compromise with feeding, aspiration pneumonia, inability to pass nasugastric tube into stomach, gastric distention (from air) |
| Hirschsprung's disease | 0-2 yr |
| Hirschsprung's disease | Feculent |
| Hirschsprung's disease | Abdominal distention, obstipation, no nerve ganglia seen on rectal biopsy; malesĀ» females |
| Anal atresia | 0-1 wk |
| Anal atresia | Late, feculent |
| Anal atresia | Detected on initial exam in nursery; males> females |
| Choanal atresia | 0-1 wk |
| Choanal atresia | Cyanosis with feeding, relieved by crying; inability to pass nasogastric tube through nose |