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Table 3 Diagnostic workup and proportion of patients with suspicious findings (n = 139)

From: The role of transoral robotic surgery, transoral laser microsurgery, and lingual tonsillectomy in the identification of head and neck squamous cell carcinoma of unknown primary origin: a systematic review

Investigation

Proportion of patients with suspicious findings

Proportion of patients without suspicious findings

No. Patients with Missing Data

Physical Exam

24/135 (18 %)

111/135 (82 %)

4

DI (CT/MRI)

9/89 (10 %)

80/89 (90 %)

41

PET-CT

17/39 (44 %)

22/39 (56 %)

100

PE/DI/PET-CT

43/78 (55 %)

35/78 (45 %)

61

EUA with biopsy

12/52 (23 %)

40/52 (77 %)

87

  1. Abbreviations: DI diagnostic imaging, CT computed tomography, MRI magnetic resonance imaging, PE physical examination, PET positron emission tomography, EUA panendoscopic examination under anesthesia