“Adenocarcinoma, NOS, mucin producing”, and mucinous adenocarcinoma accounted for eight cases each (4.23%), followed by cases classified as micropapillary predominant adenocarcinoma and G3 adenocarcinoma, with six cases for each category (3.17%), and signet ring cell adenocarcinoma with four cases (2.12%). This evidence concerns the gene MUC5AC and mucinous adenocarcinoma.