A case of primary squamous cell colon cancer.

Carcinomas of the colon are a common cancer seen in both inpatient and outpatient settings with approximately 145 000 new cases being diagnosed every year in the USA. Despite the frequency of these cancers being seen, it continues to be a rarity to see a primary squamous cell cancer of the colon. In this article, such a case is presented. While the exact aetiology of this rare tumour is currently still not completely understood, various aetiologies include chronic irritation leading to squamous differentiation, embryonic migration of ectodermal cells to the colon, or adenomas undergoing squamous transformation. J Oncol Pharm Practice (2007) 13: 47-48.