Nelson Textbook of Pediatrics 22nd Edition | Duodenal atresia (double bubble, Down syndrome, polyhydramnios), duodenal stenosis, annular pancreas, preduodenal portal vein, Ladd bands — presentation (bilious vomiting), diagnosis (X-ray, upper GI), surgical management (duodenoduodenostomy) — FCPS level
🌐 paeds.online — Pakistan's Pediatric Platform