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Antral Polyp
Case Detail
| Anatomy: Gastrointestinal |
 Joseph Junewick, MD FACR |
| Diagnostic Category: Neoplasia Benign |
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| Created: over 4 years ago |
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| Updated: over 3 years ago |
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| Tags:
PEDS
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| Modality/Study Types:
US
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Activities:  PDF  ImageJA |
History
4 month old male with progressive vomiting now with hemetemesis.
Case Images
Diagnosis
Hyperplastic antral polyp and pyloric stenosis.
Findings
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.
Discussion
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.
Reference
Kim S, et al. Coexisting hypertrophic antral polyp and hypertrophic pyloric stenosis. Ped Radiol 1997; 27:912-914.