Fig. 1

CT images of progression of hepatic cyst rupture. a CT image 1 month before presentation to our hospital. The largest cyst showed an irregularly shaped wall on the ventral side (above, yellow arrows). At that time, the caudal part of the cyst kept circular (below). Some ascitic fluid was found around the spleen. b CT image on arrival to our hospital. Volume of the irregularly shaped cyst had obviously decreased (red arrows) and was present within a relatively high dense lesion (red circle)