MUC16 and mucinous adenocarcinoma: Weight loss ≥ 5 kg (excluding the reason for gastroduodenal obstruction), tumour size ≥ 3 cm, signet ring cell or mucinous adenocarcinoma histology type, poor differentiation, diffuse or mixed Lauren classification, increased carbohydrate antigens (CA19-9, CA125, CA724), decreased lymphocyte count, and haemoglobin, albumin, pre-albumin, and increased N-glycan levels were identified as risk factors for peritoneal metastasis (Table 1).