El Hentour et al reported a CART analysis for differentiating acute appendicitis from pelvic inflammatory disease. The authors are from Lapeyronie Hospital and CHU in Montpellier, France.
Patient selection: woman of child-bearing age with acute lower abdominal pain
Exam: abdominal CT
Parameters:
(1) diameter of the appendix in mm
(2) diameter of the left fallopian tube
Diameter of Appendix
Diameter of Left Fallopian Tube
Percent Appendicitis
< 7 mm
NA
1%
> 7 mm
< 10 mm
96%
> 7 mm
>= 10 mm
0%
where:
• The number of cases in the third group was only 9. It might be possible to have both appendicitis and PID.
Performance:
• The analysis showed a 98% global accuracy.
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