“…Gardner syndrome. [19][20][21] Gardner syndrome, Turcot syndrome, or gastric adenocarcinoma and proximal polyposis of the stomach are believed to be a spectrum of familial adenomatous polyposis (FAP), depending on the specific mutation within the adenomatous polyposis coli gene (APC). FAP is a rare genetic disorder with autosomal dominant inheritance, defined by numerous adenomatous polyps, which inevitably progress to colorectal carcinoma unless detected and managed early.…”