Accurate interpretation of anogenital examination findings in the context of suspected child and adolescent sexual abuse/assault is essential, because misinterpretation has significant child protection and criminal justice implications. A consensus approach to the interpretation of anogenital examination findings is widely used to support accurate diagnosis; however, a large-scale study using this standardized approach is lacking. The objectives of this study were to: (1) determine the proportion of anogenital examinations for sexual abuse concerns with findings diagnostic of trauma and/or sexual contact; (2) determine whether frequency of diagnostic findings varies according to age, gender, and timing of examination; and (3) characterize diagnostic findings.

Retrospective records of children aged 0-18 years evaluated for sexual abuse/assault were reviewed. Case details of 3569 patients were extracted and anogenital examination findings were reinterpreted using a published consensus approach.

Anogenital examination findings diagnostic of trauma and/or sexual contact were present in 173 of 3569 patients (4.8%). The prevalence of diagnostic findings was significantly higher in adolescents than in children younger than 12 years of age (13.9%, 114/823 vs 2.2%, 59/2657), in female vs male patients (5.7%, 164/2866 vs 1.5%, 9/614), and in examinations within 72 hours for children younger than 12 years (14.2%, 91/643 vs 4.5%, 45/997). Acute injuries were the most common type of diagnostic finding.

Diagnostic findings are present in a small proportion of children and adolescents examined for suspected sexual abuse/assault. It is essential that practitioners who interpret examination findings be adequately trained and familiar with the current consensus approach and are aware of case characteristics associated with higher likelihood of findings.