Regarding congenital hypertrophic pyloric stenosis true statement is:

Ans. (b) On non feeding a mass is palpated in right upper quadrantRef: Bailey and Love 27th Edition, Page 128Congenital Hypertrophic Pyloric Stenosis* Diagnosed by clinical finding* During a test feed a visible gastric peristalsis is seen passing from left to right across upper abdomen.* In a relaxed baby (nonfeeding): Pyloric tumor is palpated as an Olive-shaped mass in right upper quadrant (Author's Note: As I Have already told a direct line from Bailey by NBE examiners)* Diagnosis is confirmed by USG.