Two cases of sigmoid colon cancer with skin metastasis

Abstract

We report two cases of sigmoid colon cancer diagnosised with skin metastasis. Case 1 : A woman in her 50's complained of a subcutaneous mass on her left back. The mass showed an invasive growth in an abdominal MRI and levels of CEA in blood were high ; further examination using colonoscopy identified a tumor in her sigmoid colon. Clinical diagnosis was sigmoid colon cancer with subcutaneous metastasis, and she underwent a sigmoidectomy and postoperative chemotherapy. Eighteen months after the operation, she was found to have right adrenal metastasis, and died 8 months thereafter. Case 2 : A woman in her 70's was found to have redness, and induration in the right femoral region. Histological examination of the biopsy revealed metastatic adenocarcinoma. Further examination showed that the diagnosis was sigmoid colon cancer with skin and liver metastasis. The skin metastasis showed rapid growth. An expandable metallic stent was used to treat the obstruction of the sigmoid colon. She was treated with palliative care and died 2 months after being diagnosised.