Histopathological findings of the erythema on the anterior chest reveal metastatic adenocarcinoma. A: HE (×100). Atypical epithelial cells infiltrating vesicular growth in the dermis can be seen. B: Immunohistochemical findings for CK20 in the erythema are positive (×200). C: Immunohistochemical findings for CDX2 in the erythema are positive (×200). D: Immunohistochemical findings for CK7 in the erythema are negative (×200). 

Histopathological findings of the erythema on the anterior chest reveal metastatic adenocarcinoma. A: HE (×100). Atypical epithelial cells infiltrating vesicular growth in the dermis can be seen. B: Immunohistochemical findings for CK20 in the erythema are positive (×200). C: Immunohistochemical findings for CDX2 in the erythema are positive (×200). D: Immunohistochemical findings for CK7 in the erythema are negative (×200). 

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The patient was a 49-year-old woman who had cancer of the rectum (Ra-b). She underwent laparoscopic low anterior resection. At 8 months after the first operation, we diagnosed local recurrence in the abdominal cavity and performed abdominal perineal resection with total hysterectomy and adnexectomy. Chemotherapy was provided until 3rd line treatmen...