Cavitating lung cancer

Cavitating lung cancer. This patient has a large thick-walled cavitating mass in the right lung. The differential diagnosis for this appearance includes primary pulmonary tumours (particularly squamous cell carcinoma), metastases (again, particularly SCC), Wegener’s, rheumatoid nodules, and cavitating pneumonia. CT-guided biopsy of the wall of this cavity showed squamous cell carcinoma.