TC con enema de agua y contraste intravenoso en la estadificación local de los tumors colorrectales

Abstract

ObjectivesDetermine the value of the water enema CT technique as a diagnostic method in the local staging of colorectal carcinoma, using the anatomopathological study of the surgical pieces as reference method. Material and methodsA total of 58 cases diagnosed of colorectal carcinoma by biopsy and staged by water enema CT and intravenous contrast have been reviewed. All the cases were classified into one of the following groups, T1-T2, T3 and T4. The anatomopathology study of the local staging was performed in all the cases and was considered the gold standard only referring to the local growth of the tumor (T). ResultsTwo groups are presented: T1-T2 compared to T3 and T4 that show the efficacy to differentiate early stages from advanced ones, the results of this group being the following: sensitivity 88.46%, specificity = 75%, positive predictive value result = 95.83%, negative predictive value result = 60%. The second group was made up by the T1- T2 and T3 compared to T4, to differentiate the early and advanced stages from the non-resectables ones. The parameters in this group are: sensitivity = 100%, specificity = 98.14%, positive predictive value result = 80%, negative predictive value result = 100%. ConclusionThe technical variant presents very high diagnostic efficacy values.