A 3-week-old boy is brought to the physician by his parents, who repo that he vomits forcefully immediately after nursing. Physical examination reveals an "olive-like" palpable mass and visible peristaltic movements within the infant's abdomen. What is the most likely cause of projectile vomiting in this infant?
Appendicitis
Congenital pyloric stenosis
Hirschsprung disease
Meconium ileus
Infantile hyperophic pyloric stenosis: - Associated with Trisomy 18 Trisomy 21 Exposure to erythromycin in 1st 2 weeks of life - Clinical features: Presents at 3-6 weeks after bih New onset regurgitation Nonbilious projectile vomiting after feeding - Diagnosis : by USG - Treatment: Pyloromyotomy Correct electrolyte imbalance before performing surgery.
Stomach