ABSTRACT
Diffuse Pan Bronchiolitis (DPB) is a peculiar airwaydisease with its pathogenesis enrooted in a complexinterplay of various genetic and environmental factors.Airway inflammation, chronic airflow limitation andsuppuratives in pulmonary infections are the distinctivefeatures of this entity. It poses a close differential toother frequently encountered pulmonary conditionslike chronic bronchitis, emphysema, bronchiectasis andconstrictive bronchiolitis. Deferment in diagnosis canculminate in irreversible airway remodeling andprogressive respiratory failure. Hence a punctualrecognition is vital. Macrolide group of drugs are primemodality of therapy and the response to therapy isbenignant. We herein describe a case of DPB withdevelopment of sequelae owing to its delayeddetection