Correlation between dysplasia and malignization risk of Crohn disease

: The malignancy risk in Crohn's disease is less than that of ulcerative colitis, although it has not been so well studied. The possibility of an early detection of malignant changes during the long term follow-up of the patients induces to look for parameters which might be helpful in this respect. In the second surgical clinic of the Hospital Clinico in Madrid, the pathological findings of 11 patients with the diagnosis of Crohn's disease have been analyzed and correlated with the clinical findings. The evaluation of the degree of dysplasia was done on 15 samples obtained by endoscopy and compared with the findings of the surgical specimens in 6 operated patients. The degree of dysplasia increases with age of the patients and years of evolution of the disease with a significant correlation (p less than 0.001) between negative dysplasia and positive dysplasia grade I.