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Mucosal Schwann Cell Hamartoma on Screening Colonoscopy: An Unusual Finding
Haidar Hussain Barjas1, Yousef Yahia1,2, Joud Aboudeh1
1Internal Medicine Department, Hamad Medical Corporation, Doha, Qatar.
Summary
This case study highlights rare mucosal Schwann cell hamartomas found in the colon. These benign gastrointestinal polyps are typically discovered incidentally during endoscopy and do not require further follow-up.
Area of Science:
- Gastroenterology
- Pathology
- Surgical Oncology
Background:
- Schwann cells, typically in the peripheral nervous system, can form benign hamartoma lesions.
- While rare in the gastrointestinal (GI) tract, these lesions have been documented in the colon.
- Mucosal Schwann cell hamartomas of the GI tract represent an understudied area, with limited investigation prior to 2009.
Purpose of the Study:
- To present a case of a 60-year-old man with incidental findings of transverse colon lesions during routine colonoscopy.
- To discuss the characteristics and implications of mucosal Schwann cell hamartomas in the GI tract.
Main Methods:
- Routine colonoscopy identified lesions in the transverse colon.
- Clinical management decisions were based on the known benign nature of these lesions.
Main Results:
- Incidental discovery of lesions in the transverse colon of a 60-year-old male patient.
- The lesions were identified as mucosal Schwann cell hamartomas.
- No further investigations were deemed necessary due to the benign nature and lack of associated risks.
Conclusions:
- Mucosal Schwann cell hamartomas are rare, benign gastrointestinal polyps found incidentally via endoscopy.
- These polyps are not typically associated with inherited syndromes.
- Diagnosis often obviates the need for further follow-up due to their benign nature.

