Heather Borders, MD
over 4 years ago
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Joseph Junewick, MD FACR
|Diagnostic Category: Neoplasia Benign
|Created: over 5 years ago
|Updated: over 4 years ago
4 month old male with progressive vomiting now with hemetemesis.
Hyperplastic antral polyp and pyloric stenosis.
UGI – elongated pyloric channel with tram track, pyloric muscle indentation upon the antrum of the stomach, subtle polypoid filling defect at antro-pyloric junction.
US – asymmetrically thickened pyloric muscle with polypoid lesion emanating into the prepyloric antrum.
Pyloric mucosal hyperplasia is a known component of hypertrophic pyloric stenosis and may be related to hypergastrinemia or prostaglandins. Hyperplastic mucosal polyps may be related to prolonged gastric outlet obstruction, enteric hormone effect and/or peptic effect.
Kim S, et al. Coexisting hypertrophic antral polyp and hypertrophic pyloric stenosis. Ped Radiol 1997; 27:912-914.