Cannonball metastases – colorectal cancer An example of multiple huge ‘cannonball’ lung metastases in a patient with colon cancer. Note the portacath in the right chest wall, used for administering the patient’s chemotherapy. Related Case Studies Lung metastases – breast cancer Lung metastases, portacath Malignant pleural effusion Cannonball metastases – CXR Pneumothorax and subcutaneous emphysema – CT Lung metastases (2)