Comments on: "Perianal Crohn's disease: clinical implications, prognosis and use of resources"

The study by Martínez Sánchez ER et al 1 has piqued our interest as it aimed to investigate the prevalence of perianal disease, the associated phenotypical factors, its influence over prognosis and its impact in the use of health resources for patients with Crohn's disease (CD). The authors identified that perianal disease (PD) among patients with CD is very prevalent, especially if there is rectal involvement, and entails higher healthcare costs than patients without PD due to the worse evolution at the perianal and luminal level, especially in complex forms. All of this forces us to optimize treatment strategies in these types of patients. We appreciate the authors' hard work. And, we have a few comments on the article.