NECROTIZING arteritis is not a rare lesion. However, few cases have been reported in which the pathologic changes have been found only in the pulmonary artery system. We have had the opportunity of studying two patients who were shown to have such localization.
REPORT OF CASES
Case 1.—A boy aged 5 years 10 months was referred for evaluation of his cardiac status.Pregnancy, delivery, and neonatal period were normal. Weight gain during infancy was slow. Motor development was normal. Other than upper respiratory infections and the difficulties referable to the heart he had had no specific illnesses.Except for diabetes in the maternal grandmother there was no history of a significant congenital, hereditary, familial, or communicable disease in either ascendency.At 6 weeks of age he was found lying in his crib with respiratory distress and cyanosis. A diagnosis of thymic compression was made, and x-ray treatments were given. Thereafter