Perineal groove

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Abstract

We present a case of this uncommon congenital anomaly of the perineum. A 6-month-old baby had a perineal groove excised for cosmetic reasons. The histology showed a strip of squamous epithelium with an intervening area lined by rectal type of mucosa, suggesting an embryological remnant such as urorectal septum.

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Case report

A female baby born at full term by a normal vaginal delivery presented to us at 6 months of age because her mother had noticed a persistent red moist cleft in her perineum. On examination, she had a longitudinal red, moist sulcus extending from the vaginal fourchette to the anterior border of a normally placed anus. There were no episodes of bleeding or pain in the area. On cosmetic grounds, a superficial excision of her perineal groove was performed. Routine histological investigation

Discussion

A perineal groove has been described as a congenital wet sulcus lined with mucus membrane, extending from the vaginal fourchette to the anus [1]. The lesion is known to be self-resolving, but it can take more than a year to become epithelialized. There has been one case report of an associated urinary tract anomaly with this lesion [2]. Stephens [3] described it with 3 features, namely, a wet groove in the perineum between the fourchette and the anus; normal formation of the vestibule including

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