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KMID : 1038120180510040368
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Clinical Endoscopy
2018 Volume.51 No. 4 p.368 ~ p.374
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Endoscopic Features of Mucous Cap Polyps: A Way to Predict Serrated Polyps
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Moy Brian T.
Forouhar Faripour
Kuo Chia-Ling
Devers Thomas J.
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Abstract
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Background/Aims: The aims of the study were to identify whether a mucous-cap predicts the presence of serrated polyps, and to determine whether additional endoscopic findings predict the presence of a sessile serrated adenomas/polyp (SSA/P).
Methods: We analyzed 147 mucous-capped polyps with corresponding histology, during 2011?2014. Eight endoscopic features (presence of borders, elevation, rim of debris, location in the colon, size ≥10 mm, varicose vessels, nodularity, and alteration in mucosal folds) of mucous-capped polyps were examined to see if they can predict SSA/Ps.
Results: A total of 86% (n=126) of mucous-capped polyps were from the right sided serrated pathway (right-sided hyperplastic [n=83], SSA/Ps [n=43], traditional serrated adenoma [n=1]), 10% (n=15) were left-sided hyperplastic polyps, and 3% (n=5) were from the adenoma-carcinoma sequence. The presence of a mucous cap combined with varicose vessels was the only significant predictor for SSA/Ps. The other seven characteristics were not found to be statistically significant for SSA/Ps, although location in the colon and the presence of nodularity trended towards significance.
Conclusions: Our study suggests that mucous-capped polyps have high predictability for being a part of the serrated pathway. Gastroenterologists should be alert for a mucous-capped polyp with varicose veins, as these lesions have a higher risk of SSA/P.
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KEYWORD
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Sessile serrated adenoma, Mucous cap polyp, Serrated pathway, Colorectal neoplasms
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