Published online August 6, 2007
PEDIATRICS Vol. 120 No. 3 September 2007, pp. e548-e552 (doi:10.1542/peds.2006-3092)

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ARTICLE

Nonoperative Management of Perianal Abscess in Infants Is Associated With Decreased Risk for Fistula Formation

Emily R. Christison-Lagay, MD^a, Jason F. Hall, MD^a, Paul W. Wales, MD^b, Karen Bailey, MD^b, Andrew Terluk, BSc^b, Allan M. Goldstein, MD^a,c, Sigmund H. Ein, MD^b and Peter T. Masiakos, MD^a,c

^a Departments of Surgery
^c Pediatric Surgery, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts
^b Department of Surgery, University of Toronto, and Department of Pediatric Surgery, Hospital for Sick Children, Toronto, Ontario, Canada

OBJECTIVE. We sought to determine the frequency of progression in infants of perianal abscess with and without surgical drainage to fistula in ano to optimize a treatment plan for these children.

METHODS. A retrospective cohort study was conducted of all patients who were 1 year of age and presented with perianal abscess to 2 pediatric tertiary care institutions during a 10-year period (January 1995 to February 2005, inclusive). Patients were divided into those who underwent surgical drainage and those who did not, and the rate of subsequent fistula formation was determined.

RESULTS. Of 165 children initially identified, follow-up was available for 140. Ninety-four percent of children were male. Mean age was 4.2 ± 3.1 months. Of the 140 patients, 83 abscesses were drained and 57 were not drained. Of patients who underwent surgical drainage, 50 developed a fistula, whereas of those who did not undergo drainage only 9 developed a fistula. Synchronous administration of antibiotics (intravenous or oral) used in 57 of 58 patients from 1 institution was associated with an even greater decrease in fistula formation (12.5%) in the undrained population.

CONCLUSIONS. Perianal abscess formation in infants who are younger than 12 months is a separate entity from abscess formation in older age groups. In this largest study to date, a combined center series of patients who presented to 2 academic pediatric hospitals with infantile perianal abscess, local hygiene and systemic antibiotics without surgical drainage minimized formation of fistula in ano.

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Key Words: perianal abscess • fistula in ano

Abbreviations: ICD-9—International Classification of Diseases, Ninth Revision • MGHfC—Massachusetts General Hospital for Children • HSC—Hospital for Sick Children

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Accepted Feb 1, 2007.

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