Figure 2.

(a) A mass shadow in the left lower lobe with significant ¹⁸F‐fluorodeoxyglucose (FDG)‐avidity uptake, considered lung cancer. (b) A mass shadow in the cardia (6.3 cm × 5.4 cm × 6.4 cm) with ring‐like FDG‐avidity uptake and central radioactivity defect, considered malignant lesions. (c) The lymph nodes of the trachea carina and paraesophageal are shown with FDG‐avidity uptake, considered lymph node metastasis. (d) The lymph nodes of the abdominal aorta are shown with FDG‐avidity uptake, considered lymph node metastasis.