Tumor markers and multimodal magnetic resonance imaging in predicting rectal cancer stage and differentiation

The CA19-9, CA72-4, CEA and AFP tumor markers combined with multimodal MRI have high sensitivity and specificity in diagnosing rectal cancer stage and differentiation. Their diagnostic efficacy is significantly better than that of single tests, which can effectively improve the predictive ability of rectal cancer stage and differentiation, provide a more reliable diagnostic reference for clinical practice, and have important clinical significance.