Isolated synchronous Virchow lymph node metastasis of sigmoid cancer: A case report

Figure 1 Contrast-enhanced computed tomography: The mass appeared to be mild enhancement. A: Axial view; B: Coronal view.

Figure 2 Positron emission tomography-computed tomography: No significant fluorodeoxyglucose uptake was observed in left supraclavicular region.

Figure 3 The left supraclavicular lymph node biopsy exhibited typical morphological findings of adenocarcinoma (hematoxylin & eosin staining × 200).

Figure 4 Colonoscopy examination: A pedunculated polyp measuring 2. 0 cm in diameter was observed in sigmoid colon.

Figure 5 Pathological finding of the endoscopic biopsy (hematoxylin & eosin staining × 100): Carcinoma tissue invades the muscularis mucosa.

Figure 6 Pathological findings of sigmoid tumor (hematoxylin & eosin staining × 100): Moderately differentiated adenocarcinomas limited to mucous membranes.

Figure 7 Immunohistochemical examination of sigmoid tumor (hematoxylin & eosin staining × 100). A: CK20 is positive; B: MSH2 is positive; C: SATB2 is positive; D: CK7 is negative.