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. 2017 Apr 12;2017:3458739. doi: 10.1155/2017/3458739

Figure 1.

Figure 1

Representative 18F-FDG-PET/CT scans. (a) A 60-year-old woman had undergone surgery for rectal carcinoma (stage I) 103 months ago. 18F-FDG-PET/CT revealed a solitary pulmonary lesion that was suspected to be malignant (SUVmax, 13.9). The CEA level was 3.7 μg/L. The patient underwent pulmonary surgery. Pathological examination confirmed pulmonary metastasis. (b) A 65-year-old man had undergone surgery for colon carcinoma (stage II) 50 months ago, followed by adjuvant chemotherapy. PET/CT revealed a solitary pulmonary lesion that was suspected to be malignant (SUVmax, 7.6), multiple mediastinal lymph metastases, and bone metastasis. The CEA level was 4.6 μg/L. A bronchoscopic biopsy confirmed primary lung adenocarcinoma. (c) A 49-year-old woman had undergone surgery for colon carcinoma (stage II) 36 months ago, followed by adjuvant chemotherapy. PET/CT revealed a solitary pulmonary lesion that was suspected to be malignant (SUVmax, 8.2). The CEA level was 5.3 μg/L. Pulmonary surgery confirmed granulomatous disease. 18F-FDG, 18Fluorine-2-fluoro-2-deoxy-d-glucose; PET/CT, positron emission tomography/computed tomography; SUVmax, maximum standardized uptake value; CEA, carcinoembryonic antigen.