MUC5AC and neoplasm: Evaluating the result of the AI algorithm shows that a higher amount of extracellular mucin is related to right-sided tumor location (p = 0.0026), more advanced pT stage (p = 0.0485), higher tumor grade (p < 0.0001), but less venous invasion (p = 0.0039) and a higher percentage of expanding tumor border (p = 0.0001).