title: Severe vasculitis during isotretinoin therapy.
mesh_terms: D000293:Adolescent; D001706:Biopsy; D014890:Granulomatosis with Polyangiitis / Q000209:etiology; D006801:Humans; D015474:Isotretinoin; D007668:Kidney / Q000473:pathology; D007676:Kidney Failure, Chronic / Q000209:etiology; D008168:Lung / Q000473:pathology; D008297:Male; D014212:Tretinoin / Q000009:adverse effects*; D014657:Vasculitis / Q000139:chemically induced*
chemical_list: D014212:Tretinoin; D015474:Isotretinoin