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Figure 2c: (a–c) Images in 50-year-old man. PET/CT was performed 7 months after resection of an ulcerating nodular malignant melanoma of scalp (Breslow thickness, 5.0 mm; Clark level, IV or V); there were negative findings at sentinel node biopsy. (a) Transverse fused PET/CT image shows two pulmonary nodules (arrows) in lower lobes. (b) Corresponding transverse PET image and (c) coronal maximum intensity projection show no FDG uptake. MR imaging (results not shown) was performed 3 days after brain metastases were detected at initial PET/CT; palliative radiation therapy was started. (d–f) Images obtained 6 months later. (d) Transverse fused PET/CT image shows progression of pulmonary nodules (arrows) in size and number. (e) Corresponding transverse PET image and (f) coronal maximum intensity projection show increased FDG uptake in several lung nodules (arrows).
