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  • Title: Fecalith in the Proximal Area of the Appendix is a Predictor of Failure of Nonoperative Treatment for Complicated Appendicitis in Adults.
    Author: Ando T, Oka T, Oshima G, Handa K, Maeda S, Yuasa Y, Aiko S.
    Journal: J Surg Res; 2021 Nov; 267():477-484. PubMed ID: 34246841.
    Abstract:
    BACKGROUND: The management of complicated appendicitis remains controversial, since this disease has various clinical presentations and is associated with high rates of adverse events. Although initial nonoperative treatment is generally employed for complicated appendicitis, its clinical presentation and the predictors of nonoperative treatment failure are unclear. METHODS: Patients diagnosed with complicated appendicitis in our hospital between April 2015 and March 2020 were enrolled. In total, 113 patients were classified into three categories: emergency appendectomy, failure of nonoperative treatment and successful nonoperative treatment. The primary outcome was the rate of failure of nonoperative treatment, as assessed by logistic regression analysis. The secondary outcomes were the operative procedures and postoperative courses of the three groups. RESULTS: Of 113 patients, 45 (40%) underwent emergency appendectomy, 25 (22%) failed nonoperative treatment, and 43 (38%) had successful nonoperative treatment. Among these successful cases, 38 patients (88%) underwent interval appendectomy. In multivariate analyses, the presence of a fecalith in the proximal area of the appendix was an independent risk factor for failure of nonoperative treatment (odds ratio, 20.5; 95% confidence interval, 4.37-95.7, P < 0.001). Postoperative outcomes were more unfavorable in cases of failed nonoperative treatment than in cases of emergency and interval appendectomy. CONCLUSIONS: The presence of a fecalith in the proximal area of the appendix is an independent predictor for failure of nonoperative treatment for complicated appendicitis in adults. Patients with this risk factor should be considered candidates for surgical treatment.
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