The aim of the study was to review relationship of pathogenesis and clinical manifestations of the hernias at the trocar site, for confirmation of the definition by classification of hernia at trocar site. The following parameters were evaluated.

The operations were limited to cholecystectomy, rectal and colon surgery fundoplication and gastric surgery; getting 44 reports. Of these 18 original articles, 19 case report and 7 how to do it technical notes were gathered. We also obtained 19 additional references. Thus we reviewed a total of 63 reports.

Material search was performed using Google, Medline-Highwire press, and also Springer link. The following terms were used hernia, trocar, laparoscopy, complication and Port. 1000 citations were found in all. The selected papers were screened for further reference. Selection criteria of literature were the number of cases (excluded if less than 20), analysis method (statistical or nonstatistical), operative procedure (only universally accepted procedures were taken into consideration) and the institution where the study was conducted (Specialized laparoscopy institute).

This is useful to classify clearly the trocar site hernias and to improve the management of laparoscopic procedures.