title: Early colorectal epithelial neoplasm in Korea: a multicenter survey of pathologic diagnosis.
abstract: BACKGROUND
  The incidence of early colorectal epithelial neoplasm (ECEN) is increasing, and its pathologic diagnosis is important for patient care. We investigated the incidence of ECEN and the current status of its pathologic diagnosis.
  
  
  METHODS
  We collected datasheets from 25 institutes in Korea for the incidence of colorectal adenoma with high grade dysplasia (HGD) and low grade dysplasia in years 2005, 2007, and 2009; and early colorectal carcinoma in the year 2009. We also surveyed the diagnostic terminology of ECEN currently used by the participating pathologists.
  
  
  RESULTS
  The average percentage of diagnoses of adenoma HGD was 7.0%, 5.0%, and 3.4% in years 2005, 2007, and 2009, respectively. The range of incidence rates of adenoma HGD across the participating institutes has gradually narrowed over the years 2005 to 2009. The incidence rate of early colorectal carcinoma in the year 2009 was 21.2%. The participants did not share a single criterion or terminology for the diagnosis of adenoma HGD. The majority accepted the diagnostic terms that distinguished noninvasive, mucosal confined, and submucosal invasive carcinoma.
  
  
  CONCLUSIONS
  Further research requirements suggested are a diagnostic consensus for the histopathologic diagnosis of ECEN; and standardization of diagnostic terminology critical for determining the disease code.
authors.forename: Yun Kyung
authors.initials: YK
authors.lastname: Kang
authors.forename: So-Young
authors.initials: SY
authors.lastname: Jin
authors.forename: Mee Soo
authors.initials: MS
authors.lastname: Chang
authors.forename: Jung Yeon
authors.initials: JY
authors.lastname: Kim
authors.forename: Gyeong Hoon
authors.initials: GH
authors.lastname: Kang
authors.forename: Hye Seung
authors.initials: HS
authors.lastname: Lee
authors.forename: Jin Hee
authors.initials: JH
authors.lastname: Sohn
authors.forename: Ho Sung
authors.initials: HS
authors.lastname: Park
authors.forename: Kye Won
authors.initials: KW
authors.lastname: Kwon
authors.forename: Mi Jin
authors.initials: MJ
authors.lastname: Gu
authors.forename: Young Hee
authors.initials: YH
authors.lastname: Maeng
authors.forename: Jong Eun
authors.initials: JE
authors.lastname: Joo
authors.forename: Haeng Ji
authors.initials: HJ
authors.lastname: Kang
authors.forename: Hee Kyung
authors.initials: HK
authors.lastname: Kim
authors.forename: Kee-Taek
authors.initials: KT
authors.lastname: Jang
authors.forename: Mi Ja
authors.initials: MJ
authors.lastname: Lee
authors.forename: Hee Kyung
authors.initials: HK
authors.lastname: Chang
authors.forename: Joon Mee
authors.initials: JM
authors.lastname: Kim
authors.forename: Hye Seung
authors.initials: HS
authors.lastname: Han
authors.forename: Won Ae
authors.initials: WA
authors.lastname: Lee
authors.forename: Yoon Jung
authors.initials: YJ
authors.lastname: Choi
authors.forename: Dong Wook
authors.initials: DW
authors.lastname: Kang
authors.forename: Sunhoo
authors.initials: S
authors.lastname: Park
authors.forename: Jae Hyuk
authors.initials: JH
authors.lastname: Lee
authors.forename: Mee-Yon
authors.initials: MY
authors.lastname: Cho
keywords: Colorectal neoplasms; Diagnosis; Incidence; Multicenter study; Pathology, surgical