Table 4.

When to Suspect Noonan Syndrome

Noonan syndrome should be considered in anyone who presents with  two or more of the following:
Characteristic facial features  (Figures 1 through 4) Developmental delay and/or  learning disability Heart defect Pubertal delay and/or infertility	Short stature Typical chest deformity Undescended testes First-degree relative who has Noonan  syndrome or any of the above features