A 60 years old chronic smoker presents with complaints of haemoptysis.her chest X,-ray appears to be normal. What is the next best investigation
CT scan is unrevealing airway inspection with bronchoscopy should be performed. CT allows better delineation of bronchiectasis, alveolar filling,cavitary infiltration and masses . Ref Harrison 19th edition pg 246,247,512
Bronchoscopy
High resolution CT
Sputum cytology
Pulmonary function test
Respiratory system