Sensibilidad y especificidad en los pacientes con cáncer de recto para la estatificación primaria por tomografía computarizada multidetector versus resonancia magnética. Revisión sistemática

Abstract

Background: Rectal cancer is the third most common neoplasm worldwide. Tomography and Magnetic Resonance have advantages in the diagnosis of primary staging in, which are characterized differently in the evaluation General Objective: To determine the sensitivity and specificity in patients with rectal cancer for primary staging by Multidetector Computed Tomography versus Magnetic Resonance. Methodology: A systematic search was carried out for studies with quantitative methodologies to compare MRI and CT in RC in primary staging. Results: The feeding indices the following values for MRI sensitivity (57.1% - 100%), specificity (69.1% - 98.32%), PPV (36.4% - 97.14%) and NPV (83% - 100%) and for CT a sensitivity (47% - 100%), specificity (60% - 95.4%), PPV (75.9% - 98%) and NPV (67% - 100%), MRI was more accurate in the evaluation of T1, T2 and N, while CT was effective in distant metastases. Conclusions: MRI shows better resolution in the intestinal layers, the intersphincter plane and mesorectal fascia and lymph nodes while CT is more precise in M staging. Therefore, MRI is the technique of first choice in the primary staging of rectal cancer. Limitations: limits the lack of luminal distention in CT images, study design, selection bias, the sample was heterogeneous and small.