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Fig. 3 | SpringerPlus

Fig. 3

From: Clinical significance of SUVmax in 18F-FDG PET/CT scan for detecting nodal metastases in patients with oral squamous cell carcinoma

Fig. 3

A 66-year-old man without neck node metastasis arising from the tongue (pT2N0). a CT of PET/CT shows two swollen lymph nodes 10 and 9 mm in longest diameter at left level IIa (arrows), suggesting the absence of nodal cancer spread. b FDG-PET/CT shows moderate FDG uptake (SUVmax:3.71 and 3.56) corresponding to the two left level IIa nodes seen in a (arrows). Examination of the histopathological specimen confirmed no lymph node metastasis. CT gave true-negative result. FDG-PET/CT using SUVmax cut-off (3.5) gave false-positive result, whereas FDG-PET/CT using modified SUVmax cut-off (4.0) gave true-negative result

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