Background: The relationship of the base of appendix to the cecum remains constant, whereas the tip can be found in a retrocecal, pelvic, subcecal, preileal, or right pericolic position. These anatomic considerations have significant clinical importance in the context of acute appendicitis. The knowledge about the correct anatomical position of appendix may facilitate in generating an accurate diagnosis of appendicitis as well as assist in achieving a better prognosis and early treatment. The present study aimed to determine the anatomical location of the appendix in Iranian cadavers. Methods: This descriptive cross-sectional study was conducted on 200 cadavers who were referred to the Forensic Center of Tehran from March to September 2013. The data including age, sex, weight, and appendix length and position were collected and analyzed using SPSS software, version 16 (SPSS, Inc., Chicago, IL, USA). Results: In the present study, 200 cadavers were evaluated accidentally, of which 173 (86.5%) were males and 26 (13%) were females, and the mean age was 39.96 years±16.31 (SD). The mean wall thickness of the appendix was 9.78 cm±16.31 (SD). The mean appendix length was 9.86 cm±1.79 (SD) in men and 9.30 cm±1.56 (SD) in women. The appendix height was long in 20 cadavers (10%), short in 3 cadavers (1.5%), and moderate in 177 cadavers (88.55%) cadavers. The appendix position was posterior in 120 (60%), ectopic in 32 (16%), and pelvic in 48 (24%) cadavers. Conclusion: Majority of appendices examined in the present study were positioned at the posterior (Retrocecal) of pelvis. According to different positions of appendices in different populations and different races, the knowledge of appendix position in various populations is necessary for early diagnosis and treatment and fewer complications for related disease.

Keywords: appendectomy, appendix, cross-sectional studies, Iran, treatment outcome

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