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A) Axial and B) coronal CT images showing a 13-cm hypodense lesion in segments 4, 3, and 2, which appears to extend through the anterior abdominal wall.
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A CT of the chest, abdomen, and pelvis was obtained and demonstrated a complex fluid collection measuring 12.7 x 8.2 cm, consistent with a liver abscess in segment 4 of the liver with extension into and through the abdominal wall with an inflammatory subcutaneous collection, right perihepatic adenopathy, and trace amounts of right-sided pleural effusion (Fig. 1).
Interval decrease in size of perihepatic abscess down to approximate baseline size of the segment-4 liver cyst that became infected and developed into the liver abscess.
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Two weeks after discharge, repeat imaging demonstrated decreased size of the abscess to 3.0 x 2.8 x 0.5 cm, again located between the right hemidiaphragm and liver, adjacent reactive lymph nodes, and stable simple cyst of left medial hepatic lobe (Fig. 2).