Table 2.

Contingency table for all patients (n=211)

FDG-PET	Cancer	Benign
Avida	154	26	PPVb 86% 95%CI: (80, 90)
Not-Avidc	14	17	NPVd 55% 95%CI: (36, 72)
			Prevalence 80% 95%CI: (74, 85)
Sensitivity 92% 95%CI: (86, 95)
Specificity 40% 95%CI: (25, 56)

The diagnosis was based upon pathological result of resected specimen.

^aFDG-PET avidity was defined by an SUV > 2.5 or moderate or intense uptake.

^bPPV = positive predictive value.

^cNot-Avid, cancerous lesions (n=14) include 6 with a pre-operative tissue diagnosis, 6 with documented growth, 1 with spiculated edge and 1 larger than 4cm in maximum diameter.

^dNPV = negative predictive value