| Abstract | PURPOSE: The aim of this study was to assess the reliability of transperineal ultrasonography (TPUS) in the pre-operative identification of the internal opening of anal fistulas compared to conventional proctological examination and operative findings. METHODS: Forty-three patients with anal fistula were assessed by TPUS with and without the use of hydrogen-peroxide injection (E-TPUS) in an attempt to identify the internal opening. Results were compared to preoperative conventional examination and operative findings. RESULTS: Operative assessment showed an anterior internal opening in 29 patients (67.4%) and a posterior opening in 14 (32.6%). Compared to the operative findings, the agreement rate for the identification of the internal opening was 74.4% for physical examination alone, 93.0% for TPUS and 90.7% for E-TPUS. Physical examination was less accurate in detecting the internal opening than both TPUS (p=0.014) and E-TPUS (p=0.026). CONCLUSIONS: TPUS and E-TPUS are superior to physical examination in the identification of internal openings in anal fistulas. Hydrogen peroxide injection does not provide additional advantages. |
| Authors | H Kleinübing Jr, J F Jannini, A C L Campos, M Pinho, L C Ferreira
(Affiliation: Department of Colo-Proctology Hospital Municipal São José, Universidade da Região de Joinville, São José, Brazil. hkleinubing at terra.com.br)
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| Journal | Techniques in coloproctology
(Tech Coloproctol)
Vol. 11
Issue 4
Pg. 327-31
(Dec 2007)
ISSN: 1123-6337 Italy |
| PMID | 18058065
(Publication Type: Comparative Study, Journal Article, Research Support, Non-U.S. Gov't)
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| Chemical References |
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| Topics |
- Adult
- Aged
- Female
- Humans
- Hydrogen Peroxide
(administration & dosage, diagnostic use)
- Injections
- Male
- Middle Aged
- Perineum
- Preoperative Care
(methods)
- Rectal Fistula
(surgery, ultrasonography)
- Reproducibility of Results
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