Cat scratch disease during etanercept therapy in a rheumatoid arthritis patient

• Published in: Reumatologia clinica Vol. 14; no. 5; p. 303
• Main Authors: Orden, Alberto O, Nardi, Norma N, Vilaseca, Alicia B, Colombini, Ana C, Barrios, Nora G, Vijnovich Barón, Anahí
• Format: Journal Article
• Language: English; Spanish
• Published: Spain 01-09-2018
• Subjects: Antirheumatic Agents - adverse effects; Antirheumatic Agents - therapeutic use; Arthritis, Rheumatoid - complications; Arthritis, Rheumatoid - drug therapy; Arthritis, Rheumatoid - immunology; Bartonella henselae - isolation & purification; Cat-Scratch Disease - diagnosis; Cat-Scratch Disease - immunology; Etanercept - adverse effects; Etanercept - therapeutic use; Female; Humans; Immunocompromised Host; Middle Aged; Enfermedad por arañazo de gato; Bartonella; Etanercept; Rheumatoid arthritis; Artritis reumatoidea; Cat scratch disease
• ISSN: 1885-1398
• DOI: 10.1016/j.reuma.2017.01.008

Cat scratch disease (CSD) is an infectious disorder caused by Bartonella henselae and characterized by fever and granulomatous lymphadenopathy. Immunosuppression is a risk factor for the development of atypical forms of the disease. We report the case of a 52-year-old woman who presented with fever and bilateral inguinal lymph node enlargement. She did not have apparent contact with animals. The patient was receiving etanercept therapy for rheumatoid arthritis. Lymph node biopsy demonstrated granulomatous lymphadenitis. She was successfully managed by discontinuing etanercept and by treatment with minocycline. She developed clinical remission and typical seroconversion. Infection with Bartonella should be considered in the differential diagnosis in rheumatoid arthritis patients with lymphadenopathy of unknown origin.