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Table 4: Clinical Information of the 19 patients with negative PET/CT findings who had a recurrence
Patient Site of Origin TNM Stage Location of Recurrence Time Interval between Negative PET/CT Findings and Recurrence (mo)
1 Oropharynx T2N2cM0 Local 7.5
2 Maxillofacial Not recorded Regional 12.7
3 Oropharynx T3N2cM0 Local 26.4
4 Oropharynx Not recorded Regional 7.5
5 Maxillofacial Not recorded Distant 11.4
6 Larynx T2N0M0 Local 9.0
7 Unknown primary T0N2bM0 Regional 27.5
8 Unknown primary T0N2bM0 Regional 23.0
9 Hypopharynx T4N2bM0 Local 6.9
10 Hypopharynx T2N2bM0 Local 3.7
11 Larynx T2N0M0 Local 3.0
12 Oropharynx T3N0M0 Local 4.6
13 Oropharynx T4N1M0 Local 9.5
14 Oral cavity Not recorded Distant 7.1
15 Oral cavity T3N1M0 Regional 37.3
16 Oral cavity T3N2cM0 Local 16.9
17 Oral cavity, larynx T2N2cM0 Regional 4.8
18 Larynx Not recorded Local 12.3
19 Oral cavity Not recorded Local 12.7
Note:—TNM indicates tumor, node, metastasis.