<prompt> Which is Not true regarding Hyperophic pyloric stenosis -Ultrasound is not useful for diagnosisUsually presents between 2 - 8 weeksCommon in malesDilated stomach with minimal gas  <response>: Ans is a ie. US is not useful for diagnosis Option A is absolutely wrong statement as US is the inv. of choice for hyperophic pyloric stenosis. Already explained in Previous question. 