de Silva, H.J.2014-10-292014-10-292004Lancet. 2004; 364(9428): pp.1110140-6736 (Print)1474-547X (Electronic)http://repository.kln.ac.lk/handle/123456789/1639Indexed in MEDLINENo Abstract AvailableRectal Neoplasms-diagnosisAdenocarcinoma-diagnosisDiagnostic ErrorsA Middle aged man. (the uses of error)ArticleMedicine