"Apical caps cover the lung apices and are often bilateral. They can be chronic, due to fibrosis or acute due to pleural or extra-pleural fluid."
"Acutely, infection, neoplasm and trauma can cause pleural or extra-pleural fluid collections which are more likely to be unilateral. Aortic rupture can be associated with a left apical cap due to haematoma 9."
"Pancoast tumour"
Expected headings
"Distribution"
"Acutely, infection, neoplasm and trauma can cause pleural or extra-pleural fluid collections which are more likely to be unilateral. Aortic rupture can be associated with a left apical cap due to haematoma 9."