[Sonographical diagnosis of pneumoretroperitoneum as a result of retroperitoneal perforation].

A retroperitoneal perforation is a rare incident. It can occur as a complication of ERCP with papillotomy (0.2-0.

[Epidemiology of gallbladder calculi in young females].

In a population sample of nearly 900 women aged less than 25 years, prevalence of gallbladder stones (GS) was estimated by ultrasound and some risk factors were analyzed. GS were found in 4.8 percent.