A case is presented which typifies the mild course of regional obstructive lung disease in the older child as contrasted with lobar emphysema of infancy with which it has been grouped. Regional obstructive lung disease as seen in children and adolescents presents a distinctly different symptom complex. The previously reported cases have been reviewed to emphasize the differences between and similarities to the well-recognized condition in the infant. Because of multiple areas of involvement, the term regional obstructive lung disease seems appropriate. The course in this age group appears to justify a more cautious approach to management.