title: Malignant melanoma during ustekinumab therapy of Crohn's disease.
authors: Laura M
authors: LM
authors: Ehmann
authors: Cornelia
authors: C
authors: Tillack-Schreiber
authors: Stephan
authors: S
authors: Brand
authors: Andreas
authors: A
authors: Wollenberg
mesh_terms: D006801:Humans; D015212:Inflammatory Bowel Diseases / Q000150:complications*; D012878:Skin Neoplasms / Q000209:etiology*