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Thumbs hypoplastic with bulbous tips
- Williams Syndrome (Genetic and Rare Diseases Information Center)Genetic and Rare Diseases Information Center ... Genetic Disorders/Specifics ... Genetic Disorders ... Developmental Disabilities/Specifics ... Developmental Disabilities ...
- ... syndrome. Impaired growth of the bones at the tips of the fingers and toes (hypoplastic terminal phalanges) account for the short fingers and toes characteristic of this disorder. Some affected individuals also have an extra bone and joint in their thumbs, causing the thumbs to look more like the ...