Second instance of co-occurring 22q11.2 deletion syndrome and Williams syndrome.

Abstract excerpt

We present an 18-month-old male with Tetralogy of Fallot, retrognathia, short stature, global developmental delay, and dysmorphic features who was found to have dual diagnoses of both Williams syndrome and 22q11.2 deletion syndrome (22q11.2DS). To our knowledge, this is the second case of such a co-occurrence documented in the medical literature. Our patient presents with a blended physical phenotype of these two...

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