Fig. 3.

Benign intralesional gas postembolization. (a) A heterogeneous enhancing mass is present in the right lobe (arrow), which was treated with bland embolization using 150–250 µm polyvinyl alcohol particles to stasis. (b) 10 days later, the patient underwent contrast-enhanced CT due to persistent abdominal pain. A nonenhancing region measuring 20 Hounsfield units containing multiple bubbles was demonstrated (arrow). The patient was otherwise afebrile without leukocytosis and had an otherwise uneventful course without antibiotic therapy.