MUC5AC and mucinous adenocarcinoma: The endometrioid variant is morphologically characterised by well-formed glands with some villoglandular foci, lined by simple to stratified columnar cells, pleomorphic nuclei, and eosinophilic cytoplasm while mucinous carcinoma variants were characterised by columnar cells with basally located nuclei and mucin-rich cytoplasm (Figures 4 and 5).