<unk>  and idiopathic<unk>  are disorders of unknown aetiology, characterised by fibrous lesions (co-)occurring at a variety of sites. Known manifestations include retroperitoneal fibrosis, mediastinal fibrosis and Riedel's struma of the thyroid.
Multifocal fibrosclerosis
Cystic medial necrosis
Reactive perforating collagenosis
Arteriosclerosis obliterans
Granulomatous angiitis
Mycotic aneurysm
Coronary artery calcification
Benign vascular tumor