Bifid appendix: its embryologic explanation and clinical implications
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چکیده
Introduction The vermiform appendix present only in human beings, certain anthropoid apes and the wombat (a nocturnal, burrowing Australian marsupial) was probably first noted as early as the Egyptian civilization (3000 B.C.). During the mummification process, abdominal parts removed and placed in Coptic jars with inscriptions describing the contents as “worm of the intestines” were discovered [1]. The vermiform appendix is a narrow tube, which arises from the postero-medial caecal wall, approximately 2 cm below the end of the ileum, located in the right lower quadrant of abdomen. Its length varies from 2 to 20 cm, with an average of 9 cm [2]. Appendiceal variations are extremely rare: they have a reported incidence of between 0.004% and 0.009% of appendectomy specimens [3–5]. There have been some cases of true absence of the vermiform appendix reported, and average 100 cases of duplication have been reported to date [6]. Despite the notorious range of variations in characters and position natural to the human vermiform appendix, the extremes of variation –absence and duplication– affect this organ so very rarely that every authentic example of either is worthy of record [7]. Therefore, we thought of reporting this case of appendicular variation seen during routine cadaveric dissection.
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تاریخ انتشار 2012