<prompt> All of the following are FALSE in case of hyperophic pyloric stenosis, EXCEPT:Symptomatic within one weekLump is always clinically palpableTreatment of choice is Finneys pyloroplastyUltrasonography is the diagnostic test  <response>: In hyperophic pyloric stenosis, the musculature of the pylorus and adjacent antrum is grossly hyperophied, the hyperophy being maximum in the pylorus itself. It occur in approximately 3 in 1000 live bihs and is the most common surgical cause of vomiting in infancy. Males are affected more commonly as compared to females and characteristically the first born male child is affected. The condition is most commonly seen at 4 week after bih ranging from 3rd week to 7th week in rare occasions. Only 20 of infants are symptomatic from bih. The diagnosis of pyloric stenosis usually can be made on clinical examination by palpation of the typical olive in the upper quadrant and the presence of visible gastric waves on the abdomen. In healthy infants when palpation is difficult, feeding can help in the diagnosis. After feeding peristalsis waves may be visible. After the infants vomits, the abdominal musculature is more relaxed and the mass is easier to palpate. When the olive cannot be palpated, USG can diagnose the condition accurately in 95 of patients. Surgical operation done for hyperophic pyloric stenosis is Fredet- Ramstedt pyloromyotomy. In it the pyloric mass is split without cutting the mucosa Ref: Schwaz 9e, Page 1425; Bailey Love 25e, Page 78; Rudolphs Pediatrics 21e, Chapter 17 