Cutaneous Metastasis of Sigmoid Adenocarcinoma to Face and Scalp at Initial Diagnosis: Case Report.

Cutaneous metastases from colorectal cancer are very rare. They appear in less than 0.5% of colorectal metastatic cases at time of initial diagnosis. They indicate disseminated disease and poor prognosis. We describe a case of 54 years old patient who presented with scalp, face and upper back cutaneous metastatic lesions derived from sigmoid cancer, 9 months prior to his initial diagnosis. Final diagnosis of cutaneous metastasis of sigmoid carcinoma was made based on fine needle aspiration cytology. An index of suspicion should be maintained with a low threshold for biopsy for any cutaneous nodule in patient with malignancy.