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Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
In CHPS which of the following is seen
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The correct answer is  In CHPS, non-bilious vomiting, metabolic alkalosis and aciduria is seen. The morphological features are due to hyperophy and hyperplasia of the circular muscle with some contribution by the longitudinal muscle. The hyperophied muscle lengthens and narrows the pyloric channel. Radiographically, there is the lengthening of the pyloric channel with smooth symmetrical narrowing. The hyperophied muscle bulges retrogradely into the antrum, creating a 'shoulder'. In infants, HPS ultrasound is the technique of choice in the diagnosis of HPS.