2025-11-182025-11-18https://repositorio.uandes.cl/handle/uandes/55575<p>The association between inflammatory bowel disease (IBD) and anal canal squamous cell carcinoma (SCC) has a low prevalence and is mainly supported by articles that include a series of cases. We describe the clinical, endoscopic and histological findings of a patient with Crohn's disease (CD) who developed SCC while undergoing biological therapy with active disease.</p>info:eu-repo/semantics/restrictedAccessAnal cancerAnal intraepithelial neoplasiaCrohn’s diseaseInflammatory bowel diseaseSquamous cell carcinomaLetter