[Preoperative staging of XXXX : endosonography versus computerized tomography].

@entity1 @entity5 @entity189
In a prospective study in 49 @entity1 with @entity189 the correlation of pre- and post-operative staging by CT and endorectal ultrasound (EU) was compared according to TNM-classification. With CT the pre/postoperative results correlated in T1 in 9/10, in T2 in 10/16, in T3 in 13/15 and in T4 in 6/8 @entity1 . By EU identical results were found in all T1, in 10/12 T2, in 17/20 T3 and in 6/7 T4 stages. Overall, pre- and postoperative identical results were found by CT in 38 and by EU in 43/49 @entity1 . Overestimation of the @entity5 stage was similar with both methods: 5 by CT and 4 by EU. Underestimation of the stage was more often by CT in 5 than by EU in 2 cases. (CT: accuracy 77.5%, sensitivity 88.3%, specificity 94.4%; ES: accuracy 87.7% sensitivity 91.5%, specificity 97.8%). Criteria for interpretation are discussed. In early @entity5 stages the depth of @entity5 invasion can be better evaluated by EU. In late stages both methods give important information for surgical strategy.
