Prevalence and risk factors of gallbladder polypoid lesions in Chinese petrochemical employees

Figure 2 Prevalence of gallbladder diseases in different age groups and polypoid lesions of the gallbladder stratified by sex in Chinese petrochemical employees. A: Prevalence of post-cholecystectomy and gallstones increased with age, whereas polypoid lesions of the gallbladder (PLGs) were more common in the middle-aged people, peaking in those aged 40-59 years; B: Prevalence of PLGs stratified by sex in different age groups in the remaining 9828 Chinese petrochemical employees. Prevalence of PLGs in men was higher than in women in all age groups.