Adenocarcinoma of the colon presenting with a Sister Mary Joseph's nodule and Trousseau's syndrome.

We describe an unusual case of colon cancer presenting with two dermatologic manifestations of internal malignancies: Trousseau's syndrome and Sister Mary Joseph's nodule. Trousseau's syndrome is associated with 1 to 11 percent of internal malignancies, while 5 percent of colorectal carcinomas present with cutaneous metastases. Our case highlights the clinical significance of dermatologic signs of occult gastrointestinal malignancies.