Clinical and pathological evaluation of patients with prostate and colorectal cancer five or more years after curative resection

Abstract

AimThe survival of men diagnosed with colorectal cancer (CRC) has improved over time, and the current 5‐year overall survival rate is 65.1 per cent. The long survival of patients with CRC raises issues regarding risk of a second primary prostate cancer and the need for continued proper surveillance. The aim of the study was to evaluate the incidence of prostate cancer in a uniform CRC population.Patients and MethodsBetween September 2007 and September 2012, 347 patients with curatively‐resected CRC who have had a follow‐up duration of more than 3 years at Gachon Medical Center were included in this study.ResultsThe incidence of synchronous or metachronous prostate cancer in addition to CRC was 4.3 per cent (15 patients). The time interval between CRC to prostate tumour in ranged from 0.1 to 5.5 years. Fourteen patients (93.3 per cent) were greater than 65 years of age. There were only two synchronous prostate cancers (0.6 per cent) among the CRC patients.ConclusionDue to the increased survival of CRC, continued surveillance could be necessary.