Abdominal sonographic screening in a single community.

A health survey, on adults aged 30 years or more, was carried out at 3 villages on the southwest coast of Taiwan. A total of 923 cases (42.6%) of the 2,166 population participated in the survey. The estimated total population prevalence rates were as follows: no gross lesion (60.5%), fatty liver (25.2%), biliary stone (5.2%), gall bladder polyp (1.9%), hepatic hemangioma (1.4%), liver cyst (0.9%) and renal cyst (2.9%). The prevalence rates of gall bladder polyp and renal cyst were higher in men, while that of fatty liver was higher in women. There was an increase in the prevalence with age for fatty liver in females. The results might be a reference about the above findings among Chinese in Taiwan.