An Unusual Metastatic Pattern of a Transverse Colon Cancer: A Case Report and Review of Literature

Abstract

Colorectal cancer (CRC) is the second most common cancer in females and the third in males worldwide [1]. The literature reported a steady increase in the incidence of CRC among both males and females under the age of 50 at a rate of 2.1% per year from 1992 through 2012 [2]. Nevertheless, screening is not currently recommended for individuals under the age of 50 unless they have inflammatory bowel disease, a positive family history, or a predisposing inherited syndrome [3]. CRCs spread principally through lymphatic and hematogenous routes, and less commonly by contiguous and trans-peritoneal dissemination [2]. Approximately 20% of patients in the United States have a distant metastatic disease at the time of presentation [2]. The most common reported metastatic sites are the liver, lungs, brain, peritoneum, and bones [2]. Most CRCs (60%) eventually develop metastatic disease, with liver involvement alone accounts for almost 50% of systemic metastasis [4].