1 From the Department of Pediatrics, Santa Clara Valley Medical Center, San Jose, CA
2 From the Division of Biostatistics, Stanford University School of Medicine, Stanford, CA
The purpose of this study was to describe and analyze the characteristics of, and the clinical correlates to, concave hymenal variations in a large number of suspected child sexual abuse victims. Thirteen hundred eighty-three female child and adolescent suspected sexual abuse victims were comprehensively evaluated. Photocolposcopy was used for the anogenital examinations. Concave hymenal variations were found in 174 patients (12.6%). Sixty-one (35.1%) were anterior. Of these, 40 (65.6%) were curved and smooth, and 21 (34.4%) were angular and/or irregular. One hundred (57.5%) were posterior/lateral. Of these, 33 (33%) were curved and smooth, and 67 (67%) were angular and/or irregular. Thirteen patients (7.5%) had multiple hymenal concavities. Posterior/lateral location was associated with penile-vaginal contact (P = .004), penetration (P = .006), stranger perpetrator (P = .032), hymenal rim narrowing (P < .001), and posterior fourchette abnormality (P = .049). Angular and/or irregular features were associated with penile contact (P = .005), vaginal contact (P = .035), penile-vaginal contact specifically (P < .001), penetration (P = .046), abnormal general physical examination (P = .018), and hymenal rim narrowing (P < .001). Logistic regression analysis demonstrated that age-specific prevalence trends for posterior/lateral (P < .001) and angular and/or irregular (P = .011) concavities were consistent with acquired anatomic findings. An interobserver exercise with five "blinded" raters evaluating photographs of 49 patients showed significant agreement among observers in sorting posterior/lateral and angular concavities into the diagnostic categories "suggestive of trauma" and "trauma." Multiple lines of evidence support the hypotheses that concavity characteristics of posterior/lateral location, angular contour, and rim irregularity are associated with prior hymenal trauma.
Key Words: sexual abuse concave hymenal variations hymenal trauma
Submitted on November 19, 1991
Accepted on January 29, 1992
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