Abstract

Diastematomyelia is a rare spinal malformation characterized by a cleft in the spinal cord caused by a sagittal osseous or fibrocartilaginous spur. We report a case of prenatal diagnosis of diastematomyelia on a routine second-trimester sonography. Postnatal MRI confirmed the diagnosis, whereas fetal MRI detected a lumbosacral lipoma. Diastematomyelia can be diagnosed antenatally with highly specific sonographic signs. We discuss the interest of antenatal MRI, made in second intention, to specify the diagnosis and the prognosis of this malformation.

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