Metastases in cutaneous and subcutaneous scars: an intriguing phenomenon that may herald the presence of a colon cancer

The occurrence of cutaneous metastases from colon cancer to cutaneous scars is being increasingly recognized and reported in the literature. Although the most common scenario involves scars resulting from prior resection of the cancer, rare instances represent distant involvement of scars from unrelated procedures. As well as being of interest as an intriguing biological phenomenon, recognition of cutaneous metastases can be of clinical relevance by pointing towards the existence of an occult internal malignancy.