Pyogenic Liver Abscess

Etiology: commonly due to Escherichia coli and Klebsiella pneumoniae
Imaging: cluster sign – small pyogenic abscesses coalesce into larger cavity

Cases of Pyogenic Liver Abscess

AXR and CT of extravasation of TPN into the liver due to umbilical venous catheter perforation out of the vein — AXR AP shows the tip of the umbilical venous catheter to project over the left portal vein. Axial CT with contrast of the abdomen shows multiple low density lesions which appear to be joined together in the left lobe of the liver.