There is no confirmatory diagnostic test for pulmonary hydatid cyst other than surgical excision and histopathologic confirmation. Imaging is at best suggestive and serology does not have a satisfactory sensitivity. We present a series of children wherein flexible fibreoptic bronchoscopy under conscious-sedation, revealed hydatid membranes in airways. Broncho-alveolar lavage analysis confirmed hydatid in half of them. We propose flexible fibreoptic bronchoscopy with broncho-alveolar lavage as a confirmatory diagnostic test for pulmonary hydatid in children. To the best of our knowledge, this is a completely novel approach to the condition with potential to alter the diagnostic paradigm.