Hypoplastic thumb

Thumb hypoplasia is a spectrum of congenital abnormalities of the thumb varying from small defects to absolute retardation of the thumb. It can be isolated, when only the thumb is affected, and in 60% of the cases it is associated with radial dysplasia (or radial club, radius dysplasia, longitudinal radial deficiency). [Source: Wikipedia ]

Is A
Congenital thumb abnormality
May Be Caused by
Acrofacial dysostosis
Acrorenal-ocular syndrome
Aminopterin fetopathy
Apert syndrome
Autosomal dominant congenital erythroid hypoplastic anemia and radial ray abnormality
Baller-Gerold syndrome
Brachmann-de Lange syndrome
Brachydactyly type B
Brachydactyly type C
Brachydactyly type D
Carpenter syndrome
Cephaloskeletal dysplasia
Christian syndrome
Chromosome 18:del(18q) syndrome
Desbuquois dysplasia
Diaphragmatic hernia and ipsilateral upper limb reduction
Diastrophic dysplasia
DOOR syndrome
Dyggve-Melchior-Clausen dysplasia
Dyssegmental dysplasia
Dyssegmental dysplasia Silverman-Handmaker type
Ectodermal dysplasia
Familial brachydactyly C
Familial brachydactyly D
Fanconi anemia
Feingold syndrome
Fibrodysplasia ossificans progressiva
Gorlin syndrome
Hand-foot-genital syndrome
Hereditary short thumbs
Holt-Oram syndrome
Isolated anomaly
IVIC syndrome
Juberg-Hayward syndrome
Larsen syndrome
Marles-Chudley syndrome
Mesomelic dysplasia Werner type
Osteosarcoma-absent thumbs syndrome
Otopalatodigital syndrome type 1
Otopalatodigital syndrome type 2
Pfeiffer syndrome
Popliteal pterygium syndrome
Radial hypoplasia syndrome
Radiodigitofacial dysplasia
Rubinstein-Taybi syndrome
Smith-Lemli-Opitz syndrome
Split-hand split-foot deformity
Symphalangism-surdity syndrome
TAR syndrome
Thalidomide embryopathy
Trisomy 18
Trisomy 9p
VATER association
Werner syndrome
Yunis-Varon syndrome