The value of unenhanced CT in the diagnosis of acute appendicitis

• Autor(a) principal: D'Ippolito, Giuseppe [UNIFESP]
• Data de Publicação: 1998
• Outros Autores: Mello, Giselle Guedes Netto de [UNIFESP], Szejnfeld, Jacob [UNIFESP]
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositório Institucional da UNIFESP
• dARK ID: ark:/48912/00130000125m5
• DOI: 10.1590/S1516-31801998000600003
• Texto Completo: http://dx.doi.org/10.1590/S1516-31801998000600003; http://repositorio.unifesp.br/handle/11600/686
• topic: Computerized tomography in appendicitis; Computerized tomography of the digestive tract; Computerized tomography; Appendix; Appendicitis

OBJECTIVE: To establish the accuracy of unenhanced CT in the preoperative diagnosis of acute appendicitis.DESIGN: Accuracy study, prospective and blinded.SETTING: The University Hospital.PARTICIPANTS: 52 patients with clinical and laboratorial manifestations of acute appendicitis. CT diagnosis was made by: presence of an abnormal appendix, appendiceal calculi with pericecal phlegmon or alterations in the pericecal appendicular site and absence of signs that may lead to other diagnosis.MAIN OUTCOME MEASURES: Overall accuracy, comparing the tomographic aspects with the intra-operative findings and pathological reports (gold standard).RESULTS: Acute appendicitis was confirmed in 44 cases. Efficacy was 92%, sensitivity was 91%, specificity was 100%, positive predictive value was 100% and negative predictive value was 67%.CONCLUSIONS: Unenhanced CT presents a similar overall accuracy to that reported by other authors who studied enhanced CT diagnosis of acute appendicitis.