Absent thumb

An absent thumb can have many associations. They include:

• Fanconi anemia (pancytopenia-dysmelia syndrome)
• Franceschetti syndrome
• Holt-Oram syndrome
• phocomelia (e.g. thalidomide embryopathy)
• Poland syndrome (pectoral muscle aplasia and syndactyly)
• Rothmund-Thomson syndrome
• Seckel syndrome (bird-headed dwarfism)
• trisomy 18
• Yunis-Varón syndrome

See also

• radial ray anomalies