3 yo child with recurrent rt. lower lobe pneumonia.Growth parameters---25th percentile, & developmentally appropriate for his age.
PMH----ear infection at 18 months & gastroenteritis at 2 yrs of age.
Which of the following conditions is most likely responsible for this pt.'s disease?
1.Primary B- or T- cell immunodeficiency
2.Cystic fibrosis
3.Chediak higashi syn.
4.Congenital lung abnormality
5.Foreign body aspiration