Endoanal ultrasound or magnetic resonance imaging for preoperative assessment of anal fistula: a comparative study.
Colorectal Dis
; 3(3): 189-97, 2001 May.
Article
em En
| MEDLINE
| ID: mdl-12790988
OBJECTIVE: To compare endoanal ultrasound (EUS) with a 10-MHz probe vs. bodycoil magnetic resonance imaging (MRI) in the preoperative evaluation of anal fistula. SUBJECTS AND METHODS: 23 patients with fistula in the anal region underwent preoperative 0.5 T bodycoil MRI and 10 MHz EUS which included probing in 6 patients. The results of the EUS and MRI were compared against the surgical findings as a reference method. RESULTS: In classification of the primary tract there was agreement between EUS and surgical findings in 14 (61%) and between MRI and surgery in 11 (48%). Concerning the presence of an internal opening the corresponding figures were 17 (74%) and 10 (43%) and in judging the presence of an extension or an abscess 15 (65%) vs. 11 (48%), respectively. In three out of eight patients with nonhealing or recurrence after surgery preoperative imaging had shown an extension and/or an abscess that was not identified by the surgeon. CONCLUSION: EUS, sometimes complemented with probing, is well comparable to bodycoil MRI in classifying and describing the topography of an anal fistula.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Tipo de estudo:
Prognostic_studies
Idioma:
En
Revista:
Colorectal Dis
Assunto da revista:
GASTROENTEROLOGIA
Ano de publicação:
2001
Tipo de documento:
Article
País de afiliação:
Suécia
País de publicação:
Reino Unido