Fig. 5From: Differential diagnoses of cavitary lung lesions on computed tomography: a pictorial essayCT images of the chest in the lung window of a 49-year-old female, in the axial (A) and the coronal (B) planes, showing a herniation of the stomach and the peritoneal fat in the right hemithorax. Note its continuity toward the abdominal cavity and the collar sign (arrows) at the level of the diaphragm visible on the coronal planeBack to article page