Papers of the Week

Adenomatous polyps in the gastrointestinal system rarely occur in childhood and are accompanied by syndromes such as Familial adenomatous polyposis, attenuated familial adenomatous polyposis, and MUTYH-associated polyposis, Gardner and Turcot syndrome, and also mismatch repair (MMR) gene defects. In this article, we want to present a rare patient who had adenomatous polyposis and in situ carcinoma and was detected biallelic MMR gene defect.