Squamous cell lung cancer producing bilateral air bronchograms on CT scan thorax.

A young lady presented with cough for three months and dyspnoea for one month along with clinical signs of bilateral consolidation of lung. On CT scan thorax there were bilateral air bronchograms with alveolar filling opacities predominantly in lower lobes. After bronchoscopy when there was presence of suspicious malignant cells on bronchoalveolar lavage fluid, transbronchial lung biopsy diagnosed the case as squamous cell lung cancer. Radiological presentation of squamous cell lung cancer as air bronchogram is not a very common phenomenon and can present a diagnostic challenge to the clinician.