Jarcho-Levin syndrome /jär′kō lev′in/ [Saul Wallenstein Jarcho, American physician, b. 1906; Paul M. Levin, 20th-century American physician] , an autosomal-recessive disorder consisting of multiple vertebral defects, short thorax, rib abnormalities, camptodactyly, syndactyly, and, occasionally, urogenital abnormalities. Death from respiratory insufficiency usually occurs in infancy. Also called spondylothoracic dysplasia.