Diamond sign is seen in
High-Yield Explanation
"Diamond"sign is a transient triangular tent-like cleft/niche in the middle of the pyloric canal, Seen in case of Congenital Hyperophic Pyloric Stenosis . Congenital hyperophic pyloric stenosis :- - usually presents around 3-12 weeks of age; as non bilious vomiting in a 1st born male - IXOC - USG - On USG appears as - target sign /cervix sign/antral nipple sign Other signs seen in CHPS :- - string sign - diamond sign - mushroom sign