Solitary esophageal metastasis ten years after curative resection of stage I rectal adenocarcinoma: A case report

Figure 1 The endoscopic examination results indicated esophageal neoplastic lesions. A: White-light endoscopy showing significant mucosal stenosis at 30 cm from incisors, with a soft and friable lesion; B: Endoscopic ultrasound demonstrating loss of normal mural layer structure and serosal interruption at lesion site (max wall thickness: 1.11 cm).

Figure 2  Whole-body absorption graph.

Figure 3 Chest computed tomography imaging. A: Showing mid-esophageal wall thickening and subcarinal lymphadenopathy when the patient presented to the thoracic surgeon; B: Showing the volume of the esophageal tumor increased, causing the esophageal lumen to narrow, after two cycles of neoadjuvant immunochemotherapy.

Figure 4 Hematoxylin and eosin stain of tumor biopsy (100 ×). A: Esophageal tumor; B: Primary rectal adenocarcinoma.

Figure 5 Immunohistochemistry results of esophageal tumor. A: CDX-2; B: SATB2.

Figure 6 Immunohistochemistry results of primary rectal adenocarcinoma. A: CDX-2; B: SATB2.

Figure 7  Radiotherapy target graph showing planning target volume.

Figure 8  Chest computed tomography imaging showing a partial response at the three-month follow-up after radiotherapy completion.