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Table 3 The positive and negative predictive value of nodal metastasis following imaging exams among various baseline possibilities of neck nodal metastasis

From: Detection of cervical lymph node metastasis in head and neck cancer patients with clinically N0 neck—a meta-analysis comparing different imaging modalities

Imaging Modalities Baseline possibility of neck nodal metastasis Positive predictive value* Negative predictive value&
CT 10% 47% 95%
  20% 66% 89%
  30% 77% 82%
MRI 10% 27% 95%
  20% 46% 90%
  30% 59% 84%
PET 10% 36% 96%
  20% 56% 91%
  30% 69% 86%
US 10% 25% 95%
  20% 42% 90%
  30% 56% 84%
  1. *: Possibility of neck nodal metastasis following a “positive” imaging result.
  2. &: Possibility of “absent” neck nodal metastasis following a “negative” imaging result.