Evaluation of magnifying colonoscopy in the diagnosis of serrated polyps

World Journal of Gastroenterology : WJG
Shinya IshigookaFumio Itoh

Abstract

To elucidate the colonoscopic features of serrated lesions of the colorectum using magnifying colonoscopy. Broad division of serrated lesions of the colorectum into hyperplastic polyps (HPs), traditional serrated adenomas (TSAs), and sessile serrated adenomas/polyps (SSA/Ps) has been proposed on the basis of recent molecular biological studies. However, few reports have examined the colonoscopic features of these divisions, including magnified colonoscopic findings. This study examined 118 lesions excised in our hospital as suspected serrated lesions after magnified observation between January 2008 and September 2011. Patient characteristics (sex, age), conventional colonoscopic findings (location, size, morphology, color, mucin) and magnified colonoscopic findings (pit pattern diagnosis) were interpreted by five colonoscopists with experience in over 1000 colonoscopies, and were compared with histopathological diagnoses. The pit patterns were categorized according to Kudo's classification, but a more detailed investigation was also performed using the subclassification [type II-Open (type II-O), type II-Long (type II-L), or type IV-Serrated (type IV-S)] proposed by Kimura T and Yamano H. Lesions comprised 23 HPs (23/118: 19.5%...Continue Reading

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Related Concepts

Adenoma, Trabecular
Malignant Tumor of Colon
Colonic Polyps
Colonoscopic Surgical Procedures
Condition, Preneoplastic
Retrospective Studies
Adenoma
Malignant Neoplasms
Classification
Colon Structure (Body Structure)

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