Hematogenous umbilical metastasis from colon cancer treated by palliative single-incision laparoscopic surgery

Figure 5 Histopathological findings of the primary colon cancer and Sister Mary Joseph’s nodule are shown (hematoxylin and eosin staining). A: In the primary colon cancer, severe invasion and tumor thrombosis were observed in the vessels (circle), and nontortuous arteries and multiple A-V shunts were also present (arrows); B: The umbilical tumor was consistent with a moderately differentiated adenocarcinoma of colonic origin. The peritoneum of the umbilicus revealed normal findings.