title: Surveillance in Lynch syndrome: how aggressive?
abstract: OBJECTIVE
  To identify colorectal cancers occurring after colonoscopic screening in patients at risk for Lynch syndrome.
  
  
  METHODS
  All cancers in Lynch syndrome families on file at the Creighton University Hereditary Cancer Institute were reviewed for history of prior colonoscopy.
  
  
  RESULTS
  Of 225 individuals with 313 colon cancers, six patients from different families had colon cancers arising within 4 1/2 yr of colonoscopic surveillance. Another 17 patients had metachronous colon cancers within 5 yr of resection of their first colon cancer.
  
  
  CONCLUSIONS
  Of 225 colorectal cancer patients from Lynch syndrome families, 10.2% of patients had colorectal cancer within 5 yr of colonoscopy or colon resection. In Lynch syndrome, the potential for interval neoplasms and the malignant potential of missed diminutive adenomas may differ from cases in the general population.
authors.affiliation: Department of Internal Medicine, Creighton University, Omaha, Nebraska.
authors.forename: S J
authors.initials: SJ
authors.lastname: Lanspa
authors.forename: J X
authors.initials: JX
authors.lastname: Jenkins
authors.forename: R J
authors.initials: RJ
authors.lastname: Cavalieri
authors.forename: T C
authors.initials: TC
authors.lastname: Smyrk
authors.forename: P
authors.initials: P
authors.lastname: Watson
authors.forename: J
authors.initials: J
authors.lastname: Lynch
authors.forename: H T
authors.initials: HT
authors.lastname: Lynch
mesh_terms: D000328:Adult; D000368:Aged; D016022:Case-Control Studies; D003113:Colonoscopy; D003123:Colorectal Neoplasms, Hereditary Nonpolyposis / Q000175:diagnosis / Q000453:epidemiology* / Q000517:prevention & control*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011159:Population Surveillance; D012307:Risk Factors; D013997:Time Factors