syndromic disease Laurence-Prosser-Rocker syndrome https://rarediseases.info.nih.gov/diseases/3201/laurence-prosser-rocker-syndrome UMLS:C2931651 MESH:C537882 MONDO:0023607 Hirschsprung's disease associated with ulnar polydactyly, polysyndactyly of big toes and ventricular septal defect Hirschsprung's disease associated with congenital heart malformation, broad big toes, and ulnar polydactyly MEDGEN:419133