Introduction: We report the first case to our knowledge where an ascending colorectal tumour presented as a necrotising lower leg infection.
Case Presentation: We describe the unusual presentation of a previously unknown caecal carcinoma in a 69-year-old Caucasian man, which presented as a rapidly spreading limb infection due to a perforated caecal adenocarcinoma. This case presented a diagnostic dilemma and we document the investigation and management in our patient and compare this to the current published literature.