title: Multiple myeloma mimicking spondyloarthritis: a case report.
authors.affiliation: Department of Rheumatology and Immunology, Peking University People's Hospital, Beijing 100044, China; Department of Rheumatology and Immunology, People's Hospital, Xinyi 221400, China.
authors.forename: Ai-chun
authors.initials: AC
authors.lastname: Liu
authors.affiliation: Department of Rheumatology and Immunology, Peking University People's Hospital, Beijing 100044, China; Department of Rheumatology and Immunology, People's Hospital, Xinyi 221400, China.
authors.forename: Yan-ying
authors.initials: YY
authors.lastname: Liu
authors.affiliation: Department of Rheumatology and Immunology, Peking University People's Hospital, Beijing 100044, China; Department of Rheumatology and Immunology, People's Hospital, Xinyi 221400, China.
authors.forename: Yan
authors.initials: Y
authors.lastname: Li
authors.affiliation: Department of Rheumatology and Immunology, People's Hospital, Xinyi 221400, China.
authors.forename: Li
authors.initials: L
authors.lastname: Zhang
authors.affiliation: Department of Rheumatology and Immunology, Peking University People's Hospital, Beijing 100044, China.
authors.forename: Zhan-guo
authors.initials: ZG
authors.lastname: Li
mesh_terms: D006801:Humans; D008297:Male; D008875:Middle Aged; D009101:Multiple Myeloma / Q000150:complications / Q000175:diagnosis*; D013167:Spondylitis, Ankylosing / Q000150:complications