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Colonic conduit for esophageal replacement: long-term endoscopic and histopathologic changes in colonic mucosa
Hossam Elshafei1, Ehab Elshafei, Mohamed ElDebeiky
1Pediatric Surgery Unit and Pathology Department, Ain Shams University Hospital, Cairo, Egypt. hossamshafei@yahoo.com
Insights
The colon is a durable esophageal substitute in children, showing minimal long-term histopathologic changes despite gastric acid exposure. Antireflux procedures can further protect this colonic conduit.
Area of Science:
- Pediatric Surgery
- Gastroenterology
- Surgical Pathology
Background:
- The colon serves as a durable and well-accepted esophageal substitute.
- Gastric acid exposure can induce chronic inflammation in colonic conduits used for esophageal replacement.
Purpose of the Study:
- To evaluate the long-term histopathologic changes in colonic conduits used for esophageal replacement in children.
- To assess the functional integrity of the colonic mucosa following esophageal substitution.
Main Methods:
- Upper gastrointestinal endoscopy was performed on 30 children 2-12 years post-esophageal replacement.
- Punch biopsies were obtained from the upper and lower junctions of the colonic conduit.
- Biopsies underwent histopathologic examination to assess mucosal changes.
Main Results:
- Most colonic conduits (83.3%) showed normal gross endoscopic appearance.
- Mild chronic nonspecific inflammation (23.4%) and mildly active inflammation (3.3%) were the main pathological findings.
- Minimal changes were observed, with most cases showing normal or near-normal histopathology.
Conclusions:
- Colonic mucosa demonstrates resilience to gastric acid reflux, maintaining function as an esophageal substitute long-term.
- No significant pathological changes were found that would compromise the conduit's function.
- Antireflux procedures may offer additional protection for colonic conduits.
Background:
Long-term follow-up has substantiated the colon as a durable and highly acceptable esophageal substitute. Exposure of colonic conduit to gastric acid may lead to histopathologic changes in the form of chronic inflammation.
Materials/Methods:
Thirty children with esophageal replacement were studied from 2 to 12 years (mean, 5.20 years) postoperatively. All cases underwent upper gastrointestinal tract endoscopy to evaluate the gross appearance of colonic conduit mucosa, and punch biopsies were taken from upper and lower junctions of the conduit. All biopsies were submitted to histopathologic examination.
Results:
Endoscopic findings were comparable with normal regarding the gross appearance of colonic mucosa in both upper and lower junctions (25 cases/83.3%). Some abnormalities were seen including cervical anastomosis stricture (2 cases/6.7%), redundancy (3 cases/10%), mucosal ulcer in the lower residual esophagus (1 case/3.3%), and hyperemia (3 cases/10%). Pathologic changes were minimal regarding the change in position of the colon to a thoracic organ during follow-up. Most of the cases were normal (22 cases/73.3%). Seven cases (23.4%) showed mild chronic nonspecific inflammation of the colonic mucosa, whereas only 1 case (3.3%) showed mildly active inflammation of colonic mucosa.
Conclusion:
The use of the colon for esophageal replacement showed that no significant pathologic changes affecting its function as a conduit because its mucosa showed no significant change in response to gastric acid reflux in long-term follow-up and can be further protected by an antireflux procedure.
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