根据Globocan 2020提供的最新数据，结直肠癌的发病率位居第三位，仅次于肺癌和乳腺癌，成为越来越重要的全球健康问题。在诊断为结直肠癌的病例中，超过 25% 被诊断处于转移期，继发性肿瘤更常见于肝脏、肺和骨骼。如今，结直肠癌皮肤转移仍然很少见（< 4%）。我们想介绍我们科室的一个罕见、独特的病例，一名 74 岁的患者在 9 年前被诊断出患有恶性直肠肿瘤，在经历了大约 8 年半的无病期后，出现了多处皮肤转移，直肠腺癌。

According to the latest data provided by Globocan 2020, the incidence of colorectal cancer ranks third, after lung cancer and breast cancer, becoming a more and more important global health issue. Of the cases diagnosed with colorectal cancer, more than 25% are diagnosed in the metastatic stage, with the presence of secondary tumors more frequently in the liver, lung and bone. Skin metastases from colorectal cancer are still rare today (< 4%). We want to present a rare, unique case in our department of a 74-year-old patient diagnosed 9 years ago with a malignant rectal tumor who, after a disease-free period of approximately 8 years and a half, developed multiple skin metastases of rectal adenocarcinoma.