[Takayasu disease in Crohn disease: an exceptional association].

Concomitant occurrence of Takayasu disease and Crohn's disease is exceedingly rare and raises questions about shared causes or etiopathogenic mechanisms. A 19-year-old man developed pulmonary tuberculosis followed by Takayasu disease immediately after a total colectomy procedure for Crohn's disease. The various facets of this combination are analyzed. In the case reported herein, there was no evidence in support of a causal relationship between the two diseases or shared etiopathogenic mechanisms.