Fanconi anemia is a rare inherited condition that can affect the thumbs. Some people with the condition may be born with extra, missing, or misshapen thumbs. While Fanconi anemia does not affect ...

It is also associated with several inherited metabolic disorders, such as Williams syndrome ... still no known cause of hypoplasia. For example, this is the case with thumb hypoplasia.

Understanding the clinical variation encountered in CRASH syndrome might increase ... including corpus callosum hypoplasia, mental retardation, adducted thumbs, spastic paraparesis and hydrocephalus.

“His surgeon did amazing, and I’m still in awe knowing that he performed such a major and life-saving surgery on a heart the size of our thumb ... with Hypoplastic Left Heart Syndrome ...