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Published on: October 10, 2025
Two hyperplastic esophagogastric polyps in a child with neurofibromatosis type 1 (NF-1)
David Grynspan1, Marek Lukacik, Shailender Madani
1Department of Pathology, Children's Hospital of Michigan, 3901 Beaubien, Detroit, MI 48201, USA.
Insights
This study reports a rare case of hyperplastic esophagogastric polyps in an 11-year-old male with neurofibromatosis type 1 (NF-1). The polyps exhibited unique features, including hyperplastic gastric peptic glands, adding to the understanding of NF-1-associated gastrointestinal findings.
Area of Science:
- Gastroenterology
- Pediatric Pathology
- Genetics
Background:
- Hyperplastic esophagogastric polyps are uncommon, typically found in adults and associated with esophageal mucosal damage.
- Pediatric cases are rare, with limited descriptions of epithelial hyperplasia.
Observation:
- A unique case of an 11-year-old male with neurofibromatosis type 1 (NF-1) presented with two hyperplastic esophagogastric polyps.
- Histopathological examination revealed hyperplastic gastric peptic glands, foveolar epithelium, and focal squamous epithelium.
Findings:
- This represents the third reported case of hyperplastic esophagogastric polyps in the context of NF-1.
- The presence of multiple polyps and diverse epithelial components (peptic glands, foveolar, squamous) is a novel observation.
Implications:
- This case expands the spectrum of gastrointestinal manifestations associated with NF-1 in pediatric patients.
- Further research may elucidate the specific mechanisms linking NF-1 to these unique polyp formations.
Abstract:
Hyperplastic esophagogastric polyps usually occur in the distal esophagus or gastroesophageal junction and have been associated with damage to the esophageal mucosa. Histologically these polyps show hyperplastic gastric foveolar and/or squamous epithelium with inflamed stroma. Reports of esophagogastric polyps in the pediatric population are rare. Most of these reports only describe chronic inflammation within the lamina propria of the polyp, with only rare reports specifying the presence of epithelial hyperplasia. There have been 2 previous cases of hyperplastic esophagogastric polyps occurring in the context of neurofibromatosis type 1 (NF-1) in a single article. Here we report a 3rd case of hyperplastic esophagogastric polyps occurring in an 11-year-old male with NF-1. This case is unique in that there were 2 polyps in the same patient and in that the polyps showed hyperplastic gastric peptic glands in addition to foveolar-type and focal squamous epithelium. The case is discussed and literature reviewed.
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