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. 2015 Jul 7;88(1052):20140592. doi: 10.1259/bjr.20140592

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© 2015 The Authors. Published by the British Institute of Radiology

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Figure 1. — Lymph node appearances on 18-fludeoxyglucose positron emission tomography (PET)-CT post-chemoradiotherapy. Nodal appearances following chemoradiotherapy on axial unenhanced CT (left column) and axial fused PET-CT (right column). (a) Negative node: 2 cm photopenic residual left Level II node. The presence of calcification post treatment is consistent with a healing response. Arrows, left Level II lymph node. (b) Equivocal node: 1.5 cm residual left Level II node displaying low-grade uptake [maximum standardized uptake value (SUV_max), 2.7]. Arrowheads, left Level II lymph node. (c) Positive node: 3 cm residual right Level II node displaying moderate-grade uptake (SUV_max, 5.3). Arrows, right Level II lymph node.