Article

Test Performance of Positron Emission Tomography and Computed Tomography for Mediastinal Staging in Patients with Non–Small-Cell Lung Cancer

Appendix Figure. Post-test probabilities are shown as a function of pretest probability in patients with positive FDG-PET results and enlarged lymph nodes on CT ( ), patients with positive FDG-PET results and no enlarged lymph nodes on CT ( ), patients with negative FDG-PET results and enlarged lymph nodes on CT ( ), and patients with negative FDG-PET results and no enlarged lymph nodes on CT ( ). When unconditional estimates of FDG-PET performance are used to make the calculations, post-test probabilities are overestimated when FDG-PET results are positive and CT shows enlarged lymph nodes ( ), underestimated when FDG-PET results are positive and CT shows no enlarged lymph nodes ( ), overestimated when FDG-PET results are negative and CT shows enlarged lymph nodes ( ), and underestimated when FDG-PET results are negative and CT shows no enlarged lymph nodes ( ). Post-test probabilities of mediastinal metastasis after computed tomography (CT) and positron emission tomography with 18-fluorodeoxyglucose (FDG-PET).solid circlessolid squaressolid trianglessolid diamondsopen circles□s▵sopen diamonds