Crohn's Disease with Atypical Extra-Intestinal Manifestations Developing Under Treatment with Vedolizumab.

Pulmonary parenchymal diseases are rare in Crohn's disease but they can be debilitating and life-threatening as they are usually tardily diagnosed; awareness of this association is of high value and could potentially shorten the time to a definite diagnosis.Pulmonary manifestations of Crohn's disease could be subclinical without any respiratory complaints and not diagnosed with conventional imaging modalities such as chest x-ray.Gut-selective biologic agents could lead to the emergence of extra-intestinal manifestations due to upregulation of multiple pro-inflammatory cytokines.