CT - CT for further assessment...
CT for further assessment of CXRic findings
CT findings confirm the chest radiographic changes of a large air cavity in the right upper lobe with minor sparing of the anterior segment. Differential diagnosis is a loculated hydropneumothorax or air cyst (bulla) containing fluid. Note further large bullae in the left upper lobe. Cavitating malignancy is unlucky given the very thin cavity wall.