Subphrenic accepting classified spaces dividing them into four spaces ( two right and two left ) we call : Rights : suprahepatic and subhepótico : Left : suprahepatic lesser sac and lesser sac . In our series there were 16 Free suprahepatic abscesses (53.3 % '8 left suprahepóticos (26.6 % ' 6 subhepatic rights ( 20%) . None in the lesser sac To deal with the pathogenesis of subphrenic abscess, we have divided into two groups : Group a which corresponds to the secondary subphrenic abscesses ie all cases of subphrenic abscess that occurred as a complication of abdominal surgery (22 cases ) and group B includes all primary subphrenic abscesses ie without abdominal surgery . prior . abdominal pathology increased incidence of subphrenic abscess is the stomach and duodenum followed by the liver and extrahepatic bile ducts. subphrenic abscess the post- cpendicectomicr has ceased to be the mos...