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  • Title: Appendicopathy--a clinical and diagnostic dilemma.
    Author: Partecke LI, Thiele A, Schmidt-Wankel F, Kessler W, Wodny M, Dombrowski F, Heidecke CD, von Bernstorff W.
    Journal: Int J Colorectal Dis; 2013 Aug; 28(8):1081-9. PubMed ID: 23516073.
    Abstract:
    PURPOSE: The term "neurogenic appendicopathy" has been used for patients operated on for acute appendicitis with their appendices lacking signs of acute inflammation. The aim of this retrospective study was to clarify the presence of potential neurogenic appendicopathies, analyzing patients' clinical symptoms and their corresponding appendiceal specimens. METHODS: One hundred twenty-one patients were identified showing a histological diagnosis of chronic appendicitis. Eventually, 40 patients qualified for the potential diagnosis "neurogenic appendicopathy." Appendix specimens were immunohistochemically examined for the expression of S-100, vasoactive intestinal polypeptide (VIP), and substance P. Controls consisted of 110 patients with acute appendicitis and 120 patients following appendectomies operated on for other reasons. RESULTS: Eventually, 40 of 120 patients qualified for the potential diagnosis "neurogenic appendicopathy." Compared to patients with acute appendicitis, there was only little difference in clinical symptoms. Histologically, neuromas, thought of being characteristic of neurogenic appendicopathy, were demonstrated significantly more often in the control group (p = 0.01). S-100 was significantly more expressed in the appendicopathy group (p = 0.0024), but nearly 50% of control specimens showed an intense staining, too. S-100(+) neurofibers were significantly (p = 0.00122) more often found in the mucosa of appendicopathy specimens, but this was true for only 25% of specimens. VIP was more strongly expressed in control specimens (p = 0.0211). Substance P was of no diagnostic value. CONCLUSIONS: Our study could not confirm the neurogenic origin of appendicopathies. Yet, clinical data strongly suggest the existence of the entity "appendicopathy." Therefore, we suggest removing a macroscopically unaffected appendix in patients with appendicitis-like symptoms if, on laparoscopy, no other cause can be found.
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