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Osseous metaplasia in a rectal polyp.

Ananyan Sampath¹, Hemalata Panwar², Neelkamal N A Kapoor³

¹All India Institute of Medical Science, Bhopal, Madhya Pradesh, India.

BMJ Case Reports

|September 26, 2023

Summary

This case report details a rare instance of a rectal polyp with osseous metaplasia in a child. The finding highlights an unusual development in benign rectal polyps.

Keywords:

Endoscopy GI bleeding Paediatric oncology Pathology

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Area of Science:

Gastroenterology
Pediatric Pathology
Surgical Pathology

Background:

Rectal polyps are common gastrointestinal growths, often presenting with rectal bleeding or palpable mass.
Histopathological classification distinguishes between neoplastic and non-neoplastic polyps.
Osseous metaplasia, the formation of bone tissue, is an uncommon finding in rectal polyps.

Observation:

A 1.5 cm rectal polyp was identified in a middle-childhood male presenting with rectal bleeding.
Histopathological analysis revealed the presence of osseous metaplasia within the rectal polyp.
The patient's presentation and polyp characteristics were consistent with benign rectal pathology.

Findings:

The rectal polyp exhibited histological evidence of osseous metaplasia.
A comprehensive literature review was performed to collate existing cases of benign rectal polyps with osseous metaplasia.
The review aimed to consolidate postulated theories regarding the pathogenesis of this rare finding.

Implications:

This case contributes to the understanding of rare rectal polyp pathologies in pediatric patients.
The incidental finding of osseous metaplasia prompts further investigation into the mechanisms of metaplasia in colorectal polyps.
Further research may elucidate the clinical significance and management of rectal polyps with osseous changes.