Table 2. The clinical features in using differential diagnosis of waardenburg syndrome type 1 from other Waardenburg syndrome types

 

WS types

Clinical features of WS types

WS1

White forelock, prematurely graying of hair, poliosis, leukoderma, deafness, heterochromia irides, synophrys, dystopia canthorum

WS2

All the clinical features of WS 1 except dystopia canthorum

WS3

All the clinical features of WS 1 + musculoskeletal abnormalities (hypoplasia, syndactyly)

WS4

All the clinical features of WS 1 + congenital aganglionic megacolon

 

WS: Waardenburg syndrome