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Updated: Nov 2, 2025

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Published on: September 5, 2011
Newborn twins with perineal grooves.
Hannah M Rabinovich1, Kimberly G Montez1
1Department of Pediatrics, Wake Forest Baptist Medical Center, Wake Forest University Health Sciences, Winston-Salem, NC, USA.
This case report details the first instance of perineal grooves diagnosed in both twins. Routine newborn examinations are crucial for identifying this benign condition.
Area of Science:
- Pediatrics
- Obstetrics & Gynecology
- Dermatology
Background:
- Perineal grooves are a rare congenital condition affecting the perineal area.
- This case involves dichorionic diamniotic twin pregnancy complicated by gestational hypertension.
Observation:
- Newborn examination revealed hypertrophic, erythematous mucosal sulci from the vaginal fourchette to the anal ridge in both female twins.
- No birth trauma was reported for either infant.
Findings:
- Diagnosis of perineal grooves was confirmed by dermatology and obstetrics/gynecology consultations.
- This is the first reported case of perineal grooves identified in both twins.
Implications:
- Routine genitourinary and anal examinations in newborns can aid in early identification of perineal grooves.
- Early diagnosis of this benign lesion can prevent misdiagnosis, unnecessary treatments, and invasive procedures.
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