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Small colorectal serrated adenomas: endoscopic findings
E Jaramillo1, M Watanabe, C Rubio
1Dept. of Diagnostic Radiology, Karolinska Hospital, Stockholm, Sweden.
Endoscopy
|January 1, 1997
Summary
Small colorectal polyps resembling hyperplastic polyps may actually be serrated adenomas with malignant potential. These findings highlight the importance of careful endoscopic evaluation for early detection of colorectal neoplasia.
Area of Science:
- Gastroenterology
- Colorectal Cancer Research
- Endoscopic Imaging
Background:
- Serrated adenomas are a distinct colorectal neoplasia subtype.
- Evidence suggests serrated adenomas can progress to invasive adenocarcinoma.
- This study details endoscopic findings in serrated adenomas.
Purpose of the Study:
- To describe the endoscopic characteristics of colorectal serrated adenomas.
- To assess the prevalence and morphology of serrated adenomas.
- To evaluate the malignant potential of serrated adenomas.
Main Methods:
- Retrospective analysis of 35 patients with colorectal serrated adenomas.
- Colonoscopic examination and histopathological review of polyps.
- Correlation of endoscopic appearance with histopathological findings.
Main Results:
- 54 of 118 adenomas (46%) were serrated type.
- Most serrated adenomas were flat (53.5%) or sessile (42.5%).
- Small serrated adenomas (<5mm) mimicked hyperplastic polyps endoscopically.
Conclusions:
- Small polyps with hyperplastic appearance may be serrated adenomas.
- Serrated adenomas possess malignant potential.
- Endoscopic vigilance is crucial for detecting potentially malignant serrated adenomas.