Ultrasound was completed at the time of baby's feed with the baby in supine position. The pylorus is visualized in longitudinal and transverse views. In the longitudinal view, pyloric stenosis is suspected by visualization of the cervix sign. This sign is meant to express a thickened and hypertrophied pyloric muscle. The measured thickness was found to be >4mm. In the transverse view, the target or donut sign is recognized. This is meant to represent hypertrophied hypoechoic muscle surrounding echogenic muscle. The thickness was found to be >4mm raising concern for hypertrophy.