Comparison of endoscopic ultrasonography and CT scan for patients with esophageal carcinoma / 重庆医学

ABSTRACT

Objective To evaluate the guidance value of endoscopic ultrasonography (EUS) and CT scan in preoperative clinical staging for diagnosis and treatment of esophageal cancer .Methods 68 patients with esophageal cancer were randomly divided into EUS group and CT group using a random numbers table(34 cases in each group) .Patients in EUS group were examined by EUS , patients in CT group were examined by CT scan ,and staged according to the TNM (2003) staging system ,and were compared with surgical pathologic findings .Results The accuracy rates of T staging by EUS were 0(0/2) for Tis ,75 .0% (3/4) for T1 ,75 .0% (6/8) for T2 ,86 .7% (13/15) for T3 ,80 .0% (4/5) for T4 ,and the totle accuracy rate was 76 .5% (26/34) for T ;those of N staging were 71 .4% (5/7) for N0 ,75 .0% (9/12) for N1 ,0(0/11) for N2 ,0(0/4) for N3 ,and the totle accuracy rate was 41 .2% (14/34) for N .The accuracy rate of T staging by CT scan were 0(0/1) for Tis ,33 .3% (2/6) for T1 ,28 .6% (2/7) for T2 ,78 .6% (11/14) for T3 ,83 .3% (5/6) for T4 and the totle accuracy rate was 58 .8% (20/34) for T ,the difference was statistically significant com-pared with the EUS group(P<0 .05);those of N staging were 77 .8% (7/9) for N0 ,76 .9% (10/13) for N1 ,66 .7% (4/6) for N2 , 50 .0% (3/6) for N3 and the totle accuracy rate was 70 .6% (24/34) for N ,the difference was statistically significant compared with the EUS group (P<0 .05) .Conclusion The accuracy rate of EUS are higher for diagnosis in esophageal cancer and preoperative T staging .The accuracy rate of CT scan are higher for the preoperative N staging .EUS combined with CT scan has great significance for choosing ideal therapy plan for esophageal cancer ,and for estimating prognosis of esophageal cancer .