cutaneous metastasis of gastrointestinal cancer

Gastrointestinal carcinoma: colorectal cancer is the second most common primary tumor and is also the most common visceral tumor that metastasizes to the skin. It most frequently occurs in the rectum, accounting for 11% to 19% of cutaneous metastases in men and 1.3% to 9% in women. Colorectal cancer is usually detected before cutaneous metastases. Skin metastases from gastrointestinal origin typically occur on the abdominal wall, perineum, and umbilicus.