Figure 2From: Colobronchial fistula presenting with persistent pneumonia in a patient with Crohn's disease: a case reportCoronal CT image shows the cavitating left lower lobe pneumonia. The fluid- and gas-containing collection transgresses the diaphragm and enters the retroperitoneal space. Although not shown here, this collection is contiguous with an abnormally thickened splenic flexure.Back to article page