Colonic carcinoma with metastases to the tibialis anterior muscle--a case report.

Colorectal carcinoma usually spreads along predictable routes to the abdominal lymph nodes, liver and lungs. Documented cases of metastatic spread to skeletal muscle are uncommon. To the knowledge of the authors, only four cases have been previously reported in the literature. This is a report of a case of advanced carcinoma of the descending colon with metastases to the left tibialis anterior muscle. This case is unusual in that the patient first presented with a symptomatic secondary deposit and the primary lesion is only discovered after the histology of the left leg tumour is known.