Perineal groove is a rare benign congenital anomaly with lesion that resembles perforation of mid-perineum or perineal raphe area. Most reported cases of congenital perineal groove presented as an isolated defect in term or early-term singleton female infants. Thus far. there is no reported case of this anomaly in monozygotic twins. https://cuttingedgecutleryco.shop/product-category/boning/