From: Superiority of NBI endoscopy to PET/CT scan in detecting esophageal cancer among head and neck cancer patients: a retrospective cohort analysis
T classification
ESCC or high-grade dysplasia
NBI-positive lesions
NBI-negative lesions
PET/CT-positive lesions
PET/CT-negative lesions
Negative
132
20
112
3
129
Tis
5
0
T1
1
4
T2
2
T3
T4