The primary outcome of the study is to determine the number of people who were diagnosed with colorectal cancer whose histology turned out to be mucinous adenocarcinoma of the colon. The secondary outcome includes features such as age group, side of the colon involved, presence of metastasis, carcinoembryonic antigen (CEA) levels, and histological features, including lymphovascular invasion, perineural invasion, and tumor necrosis. This evidence concerns the gene CEACAM5 and colon mucinous adenocarcinoma.