In colorectal cancer, subcutaneous metastasis is a very uncommon event. Generally, this metastasis is described after primary colon carcinoma and signifies widespread disease and poor prognosis. Skin metastasis without liver metastasis is very rare. Cutaneous and subcutaneous metastases in laparotomy or laparoscopy scar are reported but there are only a few reports about metastasis to old incision scar. In this article, we described a case of colon cancer presenting as a cutaneous metastasis in an old appendectomy scar and discussed possible pathophysiological mechanisms.
Keywords: Colon cancer, subcutaneous metastasis, old operation scar