title: The benefit of using narrow-band imaging systems for observation of capillary networks before determining of treatments for early colon cancer.
abstract: BACKGROUND
  This study examined whether magnifying endoscopy with narrow-band Imaging observation could be useful selecting the appropriate treatment for early colon cancer.
  
  
  METHODS
  We analyzed 551 cases of colon tumors excised endoscopically or surgically, comprising 68 with large hyperplastic polyps, 25 traditional serrated adenomas, 141 tubular adenomas, 177 intramucosal cancers and 140 submucosal invasive (SM) cancers. We classified capillary network pattern into four types according to the degree of dilatation, irregularity and distribution of microcapillary features. These results were then compared with the histological findings.
  
  
  RESULTS
  The comparison of capillary pattern and histological features showed microcapillary networks by magnifying endoscopy with narrow-band imaging observation in intramucosal lesion or SM cancer with remnant neoplastic glands at the superficial layer.
  
  
  CONCLUSIONS
  The remaining microcapillary network was designed to maintain the architecture of neoplastic glands, even in the presence of subumucosal invasion. Consequently, loss of this network could correlate with depth of tumor invasion and histological reaction. Therefore, even if the tumor, remained of network was diagnosed to invade into SM layer, it should be checked up further examination by using magnifying endoscopy with crystal violet staining.
authors.affiliation: Department of Endoscopy, The Jikei University School of Medicine, Tokyo, Japan. ssaito@jikei.ac.jp
authors.forename: Shoichi
authors.initials: S
authors.lastname: Saito
authors.forename: Hisao
authors.initials: H
authors.lastname: Tajiri
authors.forename: Tomohiko
authors.initials: T
authors.lastname: Ohya
authors.forename: Toshiki
authors.initials: T
authors.lastname: Nikami
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Aihara
authors.forename: Masahiro
authors.initials: M
authors.lastname: Ikegami
mesh_terms: D002196:Capillaries / Q000473:pathology*; D003110:Colonic Neoplasms / Q000098:blood supply* / Q000175:diagnosis / Q000628:therapy; D003113:Colonoscopy / Q000379:methods*; D003131:Combined Modality Therapy; D003937:Diagnosis, Differential; D018450:Disease Progression; D005500:Follow-Up Studies; D006801:Humans; D007089:Image Enhancement / Q000379:methods*; D007413:Intestinal Mucosa / Q000098:blood supply* / Q000473:pathology; D015203:Reproducibility of Results; D013997:Time Factors