title: Diffuse large B-cell lymphoma presenting as piriformis syndrome.
abstract: Piriformis syndrome (PS) is a rare condition characterized by pain and paresthesia of the buttock, often radiating to the posterior thigh. A patient with sciatica that was clinically suspicious for PS, underwent diagnostic work-up. A diagnosis of diffuse large B-cell lymphoma with neurolymphomatosis (NL) was made. To our knowledge, this is the first report of NL presenting as PS. NL is a possible cause of secondary PS.
authors.affiliation: Department of Neurology, Yonsei University College of Medicine, Seoul 120-752, Korea.
authors.forename: Byoung Seok
authors.initials: BS
authors.lastname: Ye
authors.forename: Il Nam
authors.initials: IN
authors.lastname: Sunwoo
authors.forename: Bum Chun
authors.initials: BC
authors.lastname: Suh
authors.forename: Jong-Pil
authors.initials: JP
authors.lastname: Park
authors.forename: Dong-Suk
authors.initials: DS
authors.lastname: Shim
authors.forename: Seung Min
authors.initials: SM
authors.lastname: Kim
mesh_terms: D000368:Aged; D000911:Antibodies, Monoclonal / Q000008:administration & dosage; D058846:Antibodies, Monoclonal, Murine-Derived; D000971:Antineoplastic Combined Chemotherapy Protocols / Q000627:therapeutic use*; D003520:Cyclophosphamide / Q000008:administration & dosage; D018572:Disease-Free Survival; D004317:Doxorubicin / Q000008:administration & dosage; D006801:Humans; D016403:Lymphoma, Large B-Cell, Diffuse / Q000150:complications* / Q000175:diagnosis* / Q000188:drug therapy; D008279:Magnetic Resonance Imaging; D008297:Male; D009431:Neural Conduction / Q000502:physiology; D055958:Piriformis Muscle Syndrome / Q000209:etiology*; D000069283:Rituximab; D012585:Sciatica / Q000209:etiology*; D016896:Treatment Outcome; D014750:Vincristine / Q000008:administration & dosage
chemical_list: D000911:Antibodies, Monoclonal; D058846:Antibodies, Monoclonal, Murine-Derived; D000069283:Rituximab; D014750:Vincristine; D004317:Doxorubicin; D003520:Cyclophosphamide