Duplication of the appendix is a rare anomaly that has been reported fewer than 60 times. Three anatomic types of appendiceal duplications have been described--each the result of a different embryologic occurrence. A unique case of appendiceal duplication is presented, in which the duplication caused a constricting lesion of the colon and mimicked carcinoma. The anomalous appendix in this patient was not compatible with any of the previously described types of appendiceal duplications.
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Michael K. Bluett (1987) studied this question.
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