KRAS and mucinous adenocarcinoma: KRAS mutated CRCs were significantly associated with females (45.1% vs 34.6% with wild-type KRAS; P = 0.001), right sided tumors (32.4% vs 21.0%; P < 0.001), higher T stage (T4, 15.3% vs 11.0%; P = 0.005), well to moderate differentiation (98.7% vs 94.7%; P = 0.002), and mucinous adenocarcinoma (9.2% vs 4.9%; P = 0.002).