Clinicopathologic findings of colorectal traditional and sessile serrated adenomas in Korea: A multicenter study

Sang Kil Lee, Hee Jin Chang, Tae Il Kim, Won Ho Kim, Cheol Keun Park, Dong Kyung Chang, Dong Il Park, Jin Hee Sohn, Jeong Sik Byeon, Suk Kyun Yang, Jin Oh Kim, Suk Ho Lee, So Young Jin, Cheol Hee Park, Il Hyun Baek, Chang Soo Eun, Dong Soo Han, Seun Ja Park, Hee Kyung Chang, Yoon Tae JeenHyun Soo Kim, Dong Hoon Park, Sung Jae Shin, Mee Soo Chang

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18 Citations (Scopus)

Abstract

Background/Aims: Serrated polyps have emerged as important evidence supporting the serrated polyp-neoplasia pathway in colorectal carcinogenesis, an alternate to the classical adenoma-carcinoma sequence. However, there is confusion over the diagnostic criteria for serrated polyps including traditional serrated adenoma (TSA) and sessile serrated adenoma (SSA). In addition, clinical and pathologic characteristics of each are largely unknown and need further exploration. Methods: The 753 polyps that were previously diagnosed as serrated adenoma (SA) from 14 tertiary care university hospitals in Korea between 2003 and 2005 were evaluated for the clinicopathologic findings of TSA and SSA. Results: Among 753 cases, 420 (55.8%) were reclassified as TSA and 56 (7.4%) as SSA. Among the pathologic parameters, crypt branching, crypt dilatation, and horizontal crypts were more frequent in SSA than in TSA (p < 0.001). SSA was larger than TSA (12.6 ± 7.3 vs. 9.8 ± 6.9 mm, p = 0.005), was more likely to be flat type (p = 0.006), and was more frequently located in the proximal colorectum (p = 0.012). There were no significant differences in age, sex, and body mass index between TSA and SSA. Conclusions: Locationand endoscopic features of the polyps with abnormal crypt morphology in histologic findings could be helpful for the diagnosis and classification of SAs.

Original languageEnglish
Pages (from-to)178-183
Number of pages6
JournalDigestion
Volume77
Issue number3-4
DOIs
Publication statusPublished - 2008 Aug 1

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Keywords

  • Sessile serrated adenomas
  • Traditional serrated adenomas

ASJC Scopus subject areas

  • Gastroenterology

Cite this

Lee, S. K., Chang, H. J., Kim, T. I., Kim, W. H., Park, C. K., Chang, D. K., Park, D. I., Sohn, J. H., Byeon, J. S., Yang, S. K., Kim, J. O., Lee, S. H., Jin, S. Y., Park, C. H., Baek, I. H., Eun, C. S., Han, D. S., Park, S. J., Chang, H. K., ... Chang, M. S. (2008). Clinicopathologic findings of colorectal traditional and sessile serrated adenomas in Korea: A multicenter study. Digestion, 77(3-4), 178-183. https://doi.org/10.1159/000142077