Primary colon adenocarcinoma with metastatic disease to the rectum followed by the left axilla

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Introduction Adenocarcinoma of the colon can metastasize to multiple organs but very rarely metastasizes to the axilla. Case We present a case of a 56-year-old male with metastatic colon adenocarcinoma that metastasized to the rectum and then the axilla. Three years after initial diagnosis and treatment of right colon mucinous adenocarcinoma a metastatic mass was found in the rectum. The mass was successfully resected, but within a year of finding the rectal mass, metastatic disease to the axilla was discovered. Conclusion This case provides valuable teaching points about routes of metastasis and the importance of continued clinical follow-up in patients diagnosed with adenocarcinoma of the colon.