Infantile hypertrophic pyloric stenosis
6 weeks old, infant presented with history of repeated vomiting immediately after feeding.
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On longitudinal axis the pyloric musculature which is hypoechoic looks thickened and its thickness measures 5.1 mm, and the length of the pyloric canal measures 16.1 mm. Cervix sign, Antral nipple sign and target sign can be well appreciated.
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Ultrasound has emerged as the primary modality for evaluation and diagnosis of infantile pyloric stenosis and is sensitive and specific.
- Hypertrophic pyloric stenosis: determination of muscle dimensions by ultrasound Poul-Erik Lund Kofoed, MD1, Arne Høst, MD, Bo Elle, MD* and Claus Larsen, MD*