More common in males (5:1) & firstborn children (30%)
Prematurity and macrolide use are also thought to be risk factors
Most common surgical cause of vomiting in infants
The main diagnostic criterion is a measurement of more than 3 mm in thickness of the muscular layer on ultrasound.
Abnormal elongation of the canal is characterised as greater than 17 mm in length .
Pyloric stenosis
Emergent
Gastric volvulus
Necrotizing Enterocolitis
Duodenal atresia
Volvulus
Achalasia
Testicular torsion