Caudal regression syndrome
CONGENITAL DISORDER IN HUMANS CAUSED BY ABNORMAL FETAL DEVELOPMENT OF THE LOWER SPINE
Sacral agenesis; Sacral Agenesis; Caudal dysplasia; Caudal dysplasia sequence; Congenital sacral agenesis; Sacral regression; Lumbo sacral agenesis; Hypoplasia of the sacrum; Caudal regression
Caudal regression syndrome, or sacral agenesis (or hypoplasia of the sacrum), is a rare birth defect. It is a congenital disorder in which the fetal development of the lower spine—the caudal partition of the spine—is abnormal.