Lupus arthropathy: a case series of patients with rhupus.
Among the clinical manifestations of systemic lupus erythematosus (SLE) is an arthropathy, which is usually nonerosive. In many cases the joint involvement is mild. A subset of patients have deforming, nonerosive Jaccoud's arthropathy, and a minority have an arthropathy with clinical findings similar to rheumatoid arthritis (RA) that has been called "rhupus." We report our series of eight patients (seven female, one male) with rhupus arthropathy. Patients were between the ages of 17 and 38 years (average: 30.3 years) at disease onset. All had deforming or Jaccoud's arthropathy, and three had erosive disease. The arthritis was typically the first disease manifestation. Other symptoms of lupus including vasculitis and glomerulonephritis appeared after an average of 2.8 years. All had positive antinuclear antibody and rheumatoid factor. Rhupus arthritis is not a combination of RA and SLE, but should be regarded as a variant of the arthropathy of lupus.
Department of Internal Medicine, Rheumatology Unit, Universidad Nacional de Colombia, Bogota, Colombia.
Andrés
A
Fernández
Gerardo
G
Quintana
Federico
F
Rondón
José Félix
JF
Restrepo
Alvaro
A
Sánchez
Eric L
EL
Matteson
Antonio
A
Iglesias
D000293:Adolescent; D000328:Adult; D001168:Arthritis / Q000150:complications* / Q000175:diagnosis; D001172:Arthritis, Rheumatoid / Q000150:complications* / Q000175:diagnosis; D005260:Female; D005921:Glomerulonephritis / Q000209:etiology; D006801:Humans; D008180:Lupus Erythematosus, Systemic / Q000150:complications*; D008177:Lupus Vulgaris; D008297:Male; D014657:Vasculitis / Q000209:etiology