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Vol. 19. Issue 2.
Pages 63-66 (February 2023)
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Vol. 19. Issue 2.
Pages 63-66 (February 2023)
Original article
Ultrasound tenosynovitis: A differential feature of patients with seronegative rheumatoid arthritis
Tenosinovitis ecográfica: una característica diferencial de pacientes con artritis reumatoide seronegativa
Santiago Rutaa,
Corresponding author
santiagoruta@gmail.com

Corresponding author.
, Einer Sanchez Pradoa, Facundo Salvatoria, Juan Arguelloa, Darío Aguerreb, Sebastián Magria, Rodrigo García Salinasa
a Rheumatology Unit, Hospital Italiano de La Plata, La Plata, Argentina
b Radiology Department, Hospital Italiano de La Plata, La Plata, Argentina
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Abstract
Objective

To identify differential features between patients with seropositive and seronegative rheumatoid arthritis (RA).

Method

Prospective cohort study, including patients who were admitted for polyarthralgia. At baseline was performed: laboratory studies, X-rays of hands and feet, ultrasound of both hands with power Doppler technique, clinical data and clinimetry. In subsequent visits the definitive diagnosis of RA was established or not. It was considered as seronegative RA when patients were negative for both RF and ACPAs.

Results

746 patients were included, of which 128 (17.1%) ended with a final diagnosis of RA. Of these 128 patients, 87 (67.9%) were seropositive RA, while 41 (32%) were seronegative RA.

The only feature that showed significant differences was the presence of tenosynovitis detected by ultrasound with a positive power Doppler signal, 13.7% of the patients with seropositive RA vs 41.6% of the patients with seronegative RA (p=0.0028).

Conclusion

The only differential feature of patients with seronegative RA was the higher proportion of tenosynovitis detected by ultrasound.

Keywords:
Rheumatoid arthritis
Rheumatoid factor
Anti-cyclic citrullinated peptide antibodies
Ultrasound
Ultrasonography
Radiography
Resumen
Objetivo

Identificar características diferenciales entre pacientes con artritis reumatoide (AR) seropositivos y seronegativos.

Método

Estudio de cohorte prospectivo, incluyendo pacientes con poliartralgias. Al inicio se realizó: estudios de laboratorio, radiografías de manos y pies, ecografía de ambas manos con técnica power doppler, datos clínicos y clinimetría. En visitas posteriores se estableció o no el diagnóstico definitivo de AR. Se consideró AR seronegativa cuando los pacientes eran negativos tanto para factor reumatoide como para anticuerpos antipéptido cíclico citrulinado.

Resultados

Se incluyeron 746 pacientes, de los cuales 128 (17,1%) terminaron con diagnóstico final de AR. De estos 128 pacientes, 87 (67,9%) eran AR seropositivos, mientras que 41 (32%) eran AR seronegativos.

La única característica que mostró diferencias significativas fue la presencia de tenosinovitis detectada por ecografía con señal power doppler positiva, el 13,7% de los pacientes con AR seropositiva frente al 41,6% de los pacientes con AR seronegativa (p=0,0028).

Conclusión

El único rasgo diferencial de los pacientes con AR seronegativa fue la mayor proporción de tenosinovitis detectadas por ecografía.

Palabras clave:
Artritis reumatoide
Factor reumatoide
Anticuerpos antipéptido cíclico citrulinado
Ecografía
Ultrasonografía
Radiografía

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