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Published online before print December 19, 2003, 10.1148/radiol.2302021520
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Appendicitis: Evaluation of Sensitivity, Specificity, and Predictive Values of US, Doppler US, and Laboratory Findings1

Nicolas Kessler, MD, Catherine Cyteval, MD, PhD, Benoct Gallix, MD, PhD, Alvian Lesnik, MD, Paul-Marie Blayac, MD, Joseph Pujol, MD, Jean-Michel Bruel, MD and Patrice Taourel, MD, PhD

1 From the Department of Radiology, Lapeyronie Hospital, 371 Avenue du Doyen Gaston Giraud, 34295 Montpellier cedex 5, France (N.K., C.C., A.L., P.M.B, J.P., P.T.) and the Department of Radiology, Saint-Eloi Hospital, Montpellier, France (B.G., J.M.B.). Received November 15, 2002; revision requested January 21, 2003; final revision received May 16; accepted June 25. Address correspondence to P.T. (e-mail: p-taourel@chu-montpellier.fr).



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  		Figure 1a. (a) Transverse and (b) longitudinal US images obtained in a 27-year-old man with appendicitis (arrows). The appendix has an anteroposterior diameter of 9.2 mm.

 


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  		Figure 1b. (a) Transverse and (b) longitudinal US images obtained in a 27-year-old man with appendicitis (arrows). The appendix has an anteroposterior diameter of 9.2 mm.

 


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  		Figure 2a. (a-c) Longitudinal US images show a normal appendix (arrows) in three different patients.

 


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  		Figure 2b. (a-c) Longitudinal US images show a normal appendix (arrows) in three different patients.

 


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  		Figure 2c. (a-c) Longitudinal US images show a normal appendix (arrows) in three different patients.

 


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  		Figure 3. Longitudinal US image shows appendicitis in a 43-year-old woman. This was a false-negative diagnosis at US. The appendiceal diameter measured less than 6 mm, but after a retrospective review of this longitudinal view, the distal appendix (arrowheads) was dilated compared to the proximal appendix (arrows).

 


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  		Figure 4. US image shows appendicitis in a 26-year-old man. Note the hypoechoic fluid in the appendiceal lumen (*) and the presence of a hyperechoic appendicolith (arrows).

 


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  		Figure 5. Transverse US image shows hyperechoic fat infiltration (*) in a 38-year-old woman with an ileocolitis. Note the thickening of the cecum (arrowheads).

 




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