Perosomus elumbis associated to hydrocephalus, urogenital and anorectal anomalies in a mule fetus

This case describes the first report in the literature of a rare congenital anomaly called Perosomus elumbis associated with severe hydrocephalus in a mule fetus. Perosomus elumbis is a disorder of unknown etiology characterized by partial or complete agenesis of the lumbar, sacral and coccyges vertebrae, in these cases, the spinal cord ends in a blind vertebral canal. Perosomus elumbis is often associated to arthrogryposis of the hind limbs and malformations of the musculature.