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KMID : 0359020080370010014
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Korean Journal of Gastrointestinal Endoscopy
2008 Volume.37 No. 1 p.14 ~ p.19
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The Pathological Differences of Colorectal Polyps Examined between the Use of a Forcep Biopsy and Endoscopic Resection
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Song In-Do
Kim Jeong-Wook
Oh In-Soo
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Abstract
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Background/Aims: Complete excision of colorectal polyps is not always performed for various reasons. We investigated the discrepancy between the histologic findings of polyps excised by a forcep biopsy and histologic findings of polyps excised by endoscopic resection.
Methods: We reviewed 137 patients with 206 colorectal polyps removed by endoscopic resection following forcep biopsies. Endoscopic records and pathological reports of patients were analyzed retrospectively.
Results: The discrepancy of the histological type was 18.4% between the histologic findings of a polyp evaluated after a forceps biopsy and the histologic findings of a polyp evaluated after endoscopic resection. The discrepancy of high-grade dysplasia(HGD) and a cancerous condition was 22.3% using the two procedures. A total of 15.5% of adenomas without HGD and 3.0% of hyperplasia in the forcep biopsy specimens were identified as adenomas with HGD in the resected specimens. A total of 18.2% of adenomas with HGD and 4.1% of adenomas without HGD in the forcep biopsy specimens were identified as adenomas with carcinoma in the resected specimens. The discrepancy rates of the histological type for HGD and a cancerous condition were high for penduculated polyps with a diameter of less than 10 mm and for polyps with a diameter of greater than 16mm.
Conclusions: Approaches to review the histology of an entire colorectal polyp should be performed, especially for polyps with an adenomatous histology and for polyps of the pedunculated form with a diameter of less than 10mm and a diameter of greater than 16 mm after a forcep biopsy.
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KEYWORD
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Colorectal polyps, Biopsy, Endoscopy
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