The most obvious finding on this CXR is free air under the diaphragm. This finding indicates a bowel perforation, unless when the patient had recent abdominal surgery and there is still some air left in the abdomen, which can stay there for several days. There is another subtle finding in the left upper lobe. A subtle density projecting over the first rib - hidden area - proved to be a lungcarcinoma. #Clinical #Radiology #CXR #Free #Air #FreeAir #Diaphragm #ApicalTumor #RadiologyAssistant
