SFTPC and hyperinsulinemic hypoglycemia, familial, 4: deficiency), viral infections (HIV, EBV, HHV8, HTLV- 1),dysproteinemias, bone marrow transplantation, Castleman disease, useof diphenylhydantoin, Waldenstrom hypergammaglobulinemia, pulmonaryamyloidosis, surfactant protein C deficiency, and drug-relatedcauses take part in the etiology of LIP (3-5).