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A new parameter in the diagnosis of acute appendicitis: Ileocolic artery and vein diameter measurements

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Aim: To determine the ability of ileocolic artery (ICA) and ileocolic vein (ICV) diameter measurements in the diagnosis of acuteappendicitis.Material and Methods: ICA, ICV, abdominal aorta (AA) and inferior vena cava (IVC) diameters were recorded in 123 patients. Patientswere grouped according to the presence of acute appendicitis clinically-radiologically. The receiver operating characteristic (ROC)curves were constructed to obtain the cutoff values in terms of differentiation of appendicitis and control groups.Results: ICA, ICV, ICA/AA and ICV/IVC measurements differed significantly between the appendicitis (n=75) and control (n=48) groups(p <0.001, p <0.001, p =0.003, p =0.006). The best cutoff values for ICA and ICV to differentiate appendicitis from the control groupwere 2.92 mm and 4.28 mm, respectively. The ICA, with a cut-off point based on the ROC curve, of 2.92 mm provided a sensitivity of70.7%, and a specificity of 70.8%. Applying the cut-off point of 4.28 mm for ICV, generated a sensitivity of 80%, and a specificity of72.9%.Conclusion: Measurements of the ICA and ICV diameter in computed tomography (CT) is a promising application for determiningacute appendicitis. This preliminary study suggests ICA and ICV diameter measurements could contribute as an alternativeparameter to major radiological evidence in the diagnosis of acute appendicitis.

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