Figure 2

(A) Changes 10 years later in the diameter of hepatic cysts that were ≥ 31 mm at the first health checkup. (B) Ultrasonographic Imaging. Case 1 represents a regression case where intracystic hyperechoic fluid was observed in the seventh year followed by regression in cyst size. Case 2 represents a regression case where intracystic hyperechoic fluid was observed in the tenth year followed by regression in cyst size.