Solitary mediastinal lymph node recurrence after curative resection of colon cancer

Figure 1 The tumor was 16 mm in size and located in the retrocrural space with suspicion of enlarged lymph nodes. A: Computed tomography (CT) scan showing a 16-mm tumor in the retrocrural space of the lower mediastinum; B: Positron emission tomography-CT did not reveal any other abnormal accumulation. The mediastinal mass had 4.232 of the sum of the maximum standard uptake values. SUV: Standardized uptake value.

Figure 2 Histopathology revealed the widespread metastasis of moderately differentiated adenocarcinoma and necrosis. Hematoxylin and eosin stain, A: × 10, B: × 50.

Figure 3 Computed tomography scan showing swelling of a para-esophageal lymph node (A), positron emission tomography-computed tomography did not reveal any other abnormal accumulation (B). The mediastinal mass had 4.520 of the sum of the maximum standard uptake values. SUV: Standardized uptake value.

Figure 4 Histopathology showing no neoplastic change in the esophageal mucosal surface, compression from the esophageal adventitia, or infiltration of the muscularis propria. Hematoxylin and eosin stain, A: × 10, B: × 50.