title: Muscular polyarteritis nodosa as a cause of fever of undetermined origin: a case report and review of the literature.
abstract: We describe an unusual presentation of a localized form of polyarteritis nodosa (PAN) manifested by fever of undetermined origin (FUO). Biopsies of the gastrocnemius muscle revealed necrotizing arteritis and initiation of prednisolone (PSL) brought rapid response. The PAN localized to muscle is rare; furthermore, this disease presented as FUO is very rare. We want to increase awareness that muscle can be also a single-affected site as well as other well known sites such as appendix, gallbladder, uterus or testis, and skin. Since there is no single appellation for this disease, we would like to propose the term "muscular PAN".
authors.affiliation: Division of Rheumatology and Clinical Immunology, Department of Medicine, Jichi Medical School, Minamikawachi-machi, Kawachi-gun, Tochigi, Japan. kamiken@ms2.jichi.ac.jp
authors.forename: Takeshi
authors.initials: T
authors.lastname: Kamimura
authors.forename: Makio
authors.initials: M
authors.lastname: Hatakeyama
authors.forename: Kimiaki
authors.initials: K
authors.lastname: Torigoe
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Nara
authors.forename: Naoko
authors.initials: N
authors.lastname: Kaneko
authors.forename: Hidetomo
authors.initials: H
authors.lastname: Satou
authors.forename: Taku
authors.initials: T
authors.lastname: Yoshio
authors.forename: Hitoaki
authors.initials: H
authors.lastname: Okazaki
authors.forename: Seiji
authors.initials: S
authors.lastname: Minota
mesh_terms: D003937:Diagnosis, Differential; D005335:Fever of Unknown Origin / Q000209:etiology*; D005938:Glucocorticoids / Q000627:therapeutic use; D006801:Humans; D008297:Male; D008875:Middle Aged; D018482:Muscle, Skeletal / Q000473:pathology; D009135:Muscular Diseases / Q000209:etiology* / Q000473:pathology; D010488:Polyarteritis Nodosa / Q000150:complications* / Q000188:drug therapy / Q000473:pathology; D011239:Prednisolone / Q000627:therapeutic use
chemical_list: D005938:Glucocorticoids; D011239:Prednisolone