Early onset colorectal cancer (cancer in person younger than 50 years) has increasing incidence last years. The aim of our study was to assess the real-life incidence of early onset colorectal cancer, advanced neoplasias (colorectal cancer and/or advanced adenoma) and all neoplastic lesions in total in a single non-university endoscopic center.

The investigators retrospectively assessed the incidence of all neoplastic lesions, advanced neoplasias and colorectal cancer in population under 50 years of age compared to population 50 years and older. The investigators collected the data from all colonoscopic examinations performed in non-university hospital Frydek-Mistek from January 2012 to the end of June 2021.

Inclusion Criteria: all patient who underwent colonoscopic examination clear indication for colonoscopy

Exclusion Criteria: not able to underwent colonoscopy

all patients who were indicated for colonoscopic examination (all indications) in period january 2012 to the end of june 2021