Clinic applicative value of MRI in the diagnosis of complex anal fistula
10.3969/j.issn.1671-8348.2014.34.023
- VernacularTitle:MRI诊断复杂性肛瘘的临床应用价值
- Author:
Junda WANG
- Publication Type:Journal Article
- Keywords:
rectal fistula;
magnetic resonance imaging;
fistula;
crissum abscess
- From:
Chongqing Medicine
2014;(34):4626-4627,4630
- CountryChina
- Language:Chinese
-
Abstract:
Objective To evaluate the clinical value of MRI examination in the diagnosis and guidance of operation complexity a-nal fistula.Methods Preoperative MRI findings of 32 patients with complex anal fistula confirmed by operation were analyzed ret-rospectively,and compared with the operation results.Results The pre-operation MRI results of 32 patients with complex anal fis-tula revealed that there were 43 fistulas,10 anus week abscesses,58 orificium fistulas,comparing the MRI diagnosis with operation results,coincidence rate of fistula,anus week abscesses,orificium fistula was 100.0%,100.0%,89.3%,respectively.MRI manifes-tations of fistula were that T1 WI manifestations of fistula was or low signal,T2 WI and T2 WI fat suppression sequence manifesta-tions of fistula was high signal,fistula presented a tubular shape obviously as T1 WI enhancement scanning,internal opening repre-sented as intensive dot,complicated embranchment,two type signal of fistula appeared at the same time.MRI manifestations of ab-scesses were that circular,ellipse,irregular form and horseshoe-shape,T1 WI manifestations of abscesses was low signal,there was gas in abscess cavity of some patients;intestinal tube surrounding of some patients were involved by abscess cavity,and up through the edge of bladder to the perineum.Conclusion MRI examination could accurately display the number of complex anal fistula,fis-tula walking and branch,the position of internal opening,correlativity between fistula and surrounding muscles,status of abscess, which could provide guidance for anorectal surgery.
