Comparison of two-dimensional ultrasound and three-dimensional endoanal ultrasound in the diagnosis of perianal fistula.
- Author:
Yahong XUE
1
;
Shuqing DING
;
Yijiang DING
;
Fei LIU
Author Information
- Publication Type:Journal Article
- MeSH: Anus Diseases; diagnostic imaging; Endosonography; methods; Humans; Imaging, Three-Dimensional; Rectal Fistula; diagnostic imaging
- From: Chinese Journal of Gastrointestinal Surgery 2014;17(12):1187-1189
- CountryChina
- Language:Chinese
-
Abstract:
OBJECTIVETo compare the accuracy of two-dimensional endoanal ultrasound (2D-EAUS) and three-dimensional endoanal ultrasound (3D-EAUS) in the diagnosis of perianal fistulas.
METHODSImage data of 47 perianal fistula patients undergoing surgery in our department between January 2012 and December 2012 were collected. All the patients underwent 2D-EAUS and 3D-EAUS, and the results were compared to intraoperative findings (gold standard) by kappa concordance test.
RESULTSBoth 2D-EAUS and 3D-EAUS showed good concordance with intraoperative findings in internal opening (kappa: 0.776 vs. 0.636). 3D-EAUS had better concordance with intraoperative finding in the diagnosis of intersphincteric, high transsphincteric and suprasphincteric fistulas as compared to 2D-EAUS (kappa: 0.810 vs. 0.592, kappa: 0.863 vs. 0.548, kappa: 1.000 vs. 0.672). 3D-EAUS showed better concordance with intraoperative findings in secondary tract compared to 2D-EAUS(kappa: 0.659 vs. 0.535). Both 2D-EAUS and 3D-EAUS had good concordance with intraoperative findings in complicated abscesses (kappa: 0.881 vs. 0.816).
CONCLUSION3D-EAUS can show the relationship of fistula with anal sphincter, especially in diagnosing high fistula and fistula with secondary tracts, and has a higher diagnostic accuracy than 2D-EAUS.
