Different imaging techniques in the head and neck: Assets and drawbacks

Figure 3 Positron emission tomography-CT after resection of a melanocytic tumor of uncertain malignant origin. A: The resection area still showed a higher glucose metabolism than normal healthy tissue at 2 mo after therapy; B: A small lymph node (LN), but no sign of higher metabolism; C: A malignant LN with higher metabolism; D: There was no higher glucose metabolism noticeable at 6 mo after therapy.