What is the following most characteristic feature of congenital hyperophic pyloric stenosis?
Diagnosis of congenital hyperophic pyloric stenosis can be made with a test feed, which produces a characteristic peristaltic wave which is seen to pass across the upper abdomen. Palpation of the abdomen at that time reveals the lump. Ref: Bailey and Love's Sho Practice of Surgery, 24th Edition, Page 1033.
The patient is commonly marasmic
It is associated with early loss of appetite
It mostly affects the first born female child
The pyloric tumour is best felt during feeding