A full-term female newborn with a BW of 3540 g was born at 39 weeks of gestation via CS for breech presentation from a 35-year-old mother G1P1; Apgar score was 9 and 10 at 1st and 5th minute, respectively. On the ultrasound of the second trimester’s anatomy scan, mildly dilated lateral ventricles were detected, a finding that was confirmed by a cranial ultrasound on the 4th day of life. The first physical examination revealed a mildly erythematous sulcus extending from the posterior vaginal fourchette to the anterior anal orifice (). The diagnosis of perineal groove was confirmed by a Pediatric Surgeon. Since no other anorectal or genital anomalies were present and the baby passed stools normally, the perineal defect was simply observed and remained stable throughout the neonate’s 5-day hospitalization. Mild improvement in the epithelization of the area was already evident at discharge ().
A 15-day old female also with no other associated medical issues was referred by her neonatologist with an abnormality of the anogenital area. We diagnosed the patient with perineal grove in our clinic. She was born to a 38-year-old woman gravida 3 para 2. The mother did not take folic acid during her pregnancy.\nWe conducted follow-ups for 18 months, and it appeared that the groove underwent a spontaneous resolution.