Describe the ultrasound features and markers of Jarcho—Levin Syndrome. Descriptive study of cases with diagnosis of Jarcho—Levin Syndrome in our unit. Two fetuses with diagnosis of Jarcho—Levine Syndrome were diagnosed in our unit in two consecutive pregnancies in women that were complicated by the autosomal recessive form of spondylothoracic dysplasia. The prenatal ultrasound features were multiple vertebral and rib malformations. These anomalies produce a specific corporal shape like a ‘crab’. This form of the body and elevate nuchal tranlucency is one of the most important markers in 11 − 13 + 6 ultrasound. Prenatal diagnosis allows for parental counseling and the possibility of the termination of pregnancy if the lethal type of spondylothoracic dysplasia is diagnosed prior to fetal viability.