Artrite reativa pós-COVID-19: relato de caso / Reactive arthritis after COVID-19: a case report

As complicações associadas à COVID-19 incluem insuficiência renal, miocardite, eventos trombóticos e retinite. No entanto, outras manifestações, como a artrite reativa, também parecem estar atreladas a este vírus e precisam ser mais bem investigadas. O caso relatado se refere a uma paciente de 32 anos, do sexo feminino, na cidade do Rio de Janeiro (RJ), que desenvolveu um quadro de artrite reativa após 5 dias da manifestação de sintomas gripais. Foram realizados exames laboratoriais, GeneXpert para COVID-19 e punção do líquido sinovial. Observou-se GeneXpert positivo para COVID-19, aumento nos marcadores inflamatórios, marcadores sorológicos de autoimunidade não reagentes e cultura negativa no líquido sinovial. Esses resultados descartam artrite séptica, bem como artrite reumatoide, passando a ser considerado o quadro de artrite pós-infecciosa decorrente do SARS-CoV-2.

Complications associated with COVID-19 include renal failure, myocarditis, thrombotic events, and retinitis. However, other manifestations, such as reactive arthritis, also seem to be associated with infection and require further investigation. We report the case of a 32-year-old woman in Rio de Janeiro, RJ who developed reactive arthritis 5 days after the onset of flulike symptoms. Laboratory tests, GeneXpert for COVID-19, and synovial fluid puncture were performed. Positive GeneXpert results for COVID-19, increased inflammatory markers, non-reactive serological markers of autoimmunity, and negative culture in synovial fluid were observed. These results ruled out both septic arthritis and rheumatoid arthritis, leading to a diagnosis of postinfectious arthritis resulting from SARS-CoV-2.

REACTIVE ARTHRITIS AS CLINICAL SUSPICION OF COVID-19 INFECTION

Rheumatic manifestations occur relatively frequently in the course of COVID-19. In the cases of paucisymptomatic patients they constitute an element of clinical suspicion for the de?nitive diagnosis of the disease. Reactive arthritis is the most common rheumatic manifestation seen in COVID-19. The objective of this work is to report the case of a female patient in which the presence of reactive arthritis constitutes the elements of suspicion for the de?nitive diagnosis of the disease. It is concluded that rheumatic manifestations constitute an important element of suspicion to diagnose COVID-19, mainly in patients without respiratory manifestations of the disease.

Enfermedad de Poncet: manifestación inusual de tuberculosis / Poncets disease: unusual manifestation of tuberculosis

Resumen LA enfermedad de Poncet es una poliartritis aséptica reactiva poco frecuente que ocurre durante cualquier etapa de una infección activa pulmonar o extrapulmonar por Mycobacterium tuberculosis. Existen apenas 200 casos descritos en la bibliografía y hasta el momento permanece como diagnóstico de exclusión sin patogenia bien definida. Suele responder rápida y satisfactoriamente al tratamiento antituberculoso sin dejar secuelas. Este artículo revisa la epidemiología, patogenia, manifestación clínica, diagnóstico, tratamiento y pronóstico de la enfermedad de Poncet.

Abstract Poncet's disease is a rarely reported aseptic reactive polyarthritis associated to active pulmonary or extrapulmonary infection caused by Mycobacterium tuberculosis. There are no more than 200 cases reported in the literature and still remains as a diagnosis of exclusion with unknown pathogenesis. It quickly and remarkably resolves with antituberculous drugs, has usually a good prognosis and does not turn into chronic arthritis. This article reviews the epidemiology, pathogenesis, clinical presentation, diagnosis, treatment options and prognosis of Poncet's disease.

Artritis reactiva post-estreptocócica. Una revisión de literatura / Post-streptococcal reactive arthritis. A literature review

Introducción: existe un debate en la actualidad acerca de si la artritis reactiva post-estreptocócica es una entidad separada o una condición en el espectro de la fiebre reumática aguda. Objetivo: revisar la literatura existente sobre el tema artritis reactiva post-estreptocócica. Desarrollo : se realizó una búsqueda bibliográfica en Medline, Pubmed, Scielo y Dialnet, buscando como palabras clave: artritis y artritis reactiva post-estreptocócica. Además de la búsqueda computadorizada se realizó una búsqueda manual. Dichas bases de datos recogen las publicaciones más importantes en el campo científico de la medicina. La búsqueda se realizó en abril del 2018, y comprendió desde el año 1989 hasta la actualidad. Utilizamos el programa Reference Manager, versión 12, para crear una base de datos con las publicaciones, categorizarlas y filtrarlas de acuerdo a su relevancia para nuestro estudio. Se recabaron un total de 45 documentos en total, de los cuales fueron descartados unos 30, debido a su nivel de generalización y escasa especificidad en el tema abordado. Conclusiones: los signos clásicos de tumefacción, eritema, calor y dolor están presentes, siendo el dolor el más importante, está presente en reposo y aumenta con los movimientos. Como en la FR, la artritis postestreptocócica es una artritis reactiva caracterizada por una infección faríngeaestreptocócica, un intervalo libre y una posterior inflamación aséptica en una o más articulaciones(AU)

Introduction: there is currently debate about whether post-streptococcal reactive arthritis is a separate entity or condition in the spectrum of acute rheumatic fever. Objective: to review the existing literature on the topic post-streptococcal reactive arthritis. Development: a bibliographic search was carried out in Medline, Pubmed, Scielo and Dialnet, searching as keywords: arthritis and post-streptococcal reactive arthritis. In addition to the computerized search, a manual search was carried out. These databases collect the most important publications in the scientific field of medicine. The search was conducted in April 2018, and ran from 1989 to the present. We use the Reference Manager program, version 12, to create a database with publications, categorize them and filter them according to their relevance to our study. A total of 45 documents were collected, of which about 30 were discarded, due to their level of generalization and lack of specificity in the topic addressed. Conclusions: the classic signs of swelling, erythema, heat and pain are present, with pain being the most important, it is present at rest and increases with movements. As in RF, post-streptococcal arthritis is a reactive arthritis characterized by a pharyngeal-streptococcal infection, a free interval and subsequent aseptic inflammation in one or more joints(AU)

Diagnosis and Treatment of Inflammatory Joint Disease / 대한고관절학회지

Arthritis damages the cartilage within joints, resulting in degenerative changes, including loss of function and joint instability. Ankylosing spondylitis (AS) is a chronic inflammatory condition affecting the spine and bone-to-tendon attachment area within the sacroiliac joint leading to back pain and progressive spinal stiffness. In the final stages, AS causes hyperkyphosis-a condition closely tied to the human leukocyte antigen-B27 gene. Rheumatoid arthritis is a chronic, systemic autoimmune disease characterized by the simultaneous inflammation of the synovium of multiple joints, leading to joint damage (e.g., destruction, deformation and disability). In the past, nonsteroidal anti-inflammatory drugs or conventional disease-modifying antirheumatic drug (DMARDs) have been used for the treatment of these autoimmune diseases, but biologic DMARDs have recently been introduced with excellent results. Gout is a chronic inflammatory disease that causes an alteration of joints resulting in severe pain. Specifically, gout is associated with an accumulation of uric acid within the body resulting from dysregulated purine metabolism, causing recurrent paroxysmal inflammation in the joints. Allopurinol and febuxostat are the primary treatment options for individuals with gout. It is necessary to have an accurate understanding of the pathogenesis, pathological ecology and treatment of AS, rheumatoid arthritis, and gouty arthritis, which are the representative diseases that may cause inflammatory arthritis.

Acute myopericarditis as primary manifestation of urogenital reactive arthritis by Staphylococcus haemolyticus metilcilino resistant / Miopericarditis aguda como manifestación primaria de artritis reactiva urogenital por Staphylococcus haemolyticus resistente a meticilina

Reactive arthritis describes the relationship between the host and the environment. This leads to urogenital or gastrointestinal infections. It clinically presents with inflammatory lumbosacral pain, asymmetric oligoarthritis and enthesitis of the Achilles tendon and plantar fascia. Among the extra-articular manifestations are acute anterior uveitis, skin lesions, genital lesions, and oral ulcers, with the rarest being cardiovascular. A case is presented of a patient with a urogenital infection and cardiovascular manifestations, interpreted and managed as acute coronary syndrome. After further studies an acute myopericarditis was considered as a primary manifestation of reactive arthritis.

La artritis reactiva describe la interrelación entre el hospedero y el medio ambiente. Aparece después de infecciones urogenitales o digestivas. Clínicamente presenta dolor lumbosacro inflamatorio, oligoartritis asimétrica y entesitis del tendón de Aquiles y la fascia plantar. Entre las manifestaciones extraarticulares, se encuentran la uveítis anterior aguda, lesiones en piel, lesiones genitales y úlceras orales. Las más infrecuentes son las cardiovasculares. Describimos el caso de un paciente con infección urogenital y manifestaciones cardiovasculares interpretadas y manejadas como síndrome coronario agudo, pero que a la luz de estudios posteriores se consideró finalmente una miopericarditis aguda como manifestación primaria de una artritis reactiva.

Abordagem Fisioterapêutica da Dor Crônica nas Espondiloartropatias Soronegativas / Treatment Physical Therapy of Cronic Pain in Spondyloarthropathies Seronegatives

Introdução: As espondiloartropatias formam um grupo de doenças distintas com características comuns, entre elas estão a espondilite anquilosante, artrite psoriática, artrite reativa e artrite enteropática. Caracterizam-se como doenças crônicas inflamatórias, e incluem uma variedade de características clínicas e genéticas, dentre essas está a associação com o antígeno HLA-B27. Objetivos: O estudo objetivou revisar na literatura informações sobre a abordagem fisioterapêutica na dor crônica nos indivíduos portadores de espondiloartropatias. Métodos: 26 artigos foram selecionados manualmente nas línguas portuguesa e inglesa indexados nas bases de dados eletrônicos SciELO, LILACS, e Pubmed partindo dos descritores Espondiloartropatias, Espondilite Anquilosante, Artrite Reativa, Artrite Psoriásica em cruzamento com a palavra chave Fisioterapia, de acordo com os Descritores em Ciências da Saúde (DeCS). Resultados: Foram analisados 178 artigos dos quais 147 artigos foram excluídos por não se enquadrarem nos critérios de seleção e 26 preencheram os critérios de inclusão, permitindo a fundamentação teórica e problemática do assunto pesquisado. Conclusão: O diagnóstico precoce juntamente com a cinesioterapia - com ênfase à hidrocinesioterapia - demonstra redução da dor, melhora na capacidade funcional, melhora da amplitude de movimento, diminuição do quadro inflamatório e melhora da qualidade de vida.

Introduction: Spondyloarthropathies form a group of different diseases with common characteristics, among them are ankylosing spondylitis, psoriatic arthritis, reactive arthritis and arthritis enteropathic. Are characterized as chronic inflammatory diseases, including a variety of clinical and genetic characteristics, among these is the association with the HLA-B27 antigen. Objectives: The aim of this study was to review the literature about the physical therapy approach to chronic pain in patients with spondyloarthritis. Méthods: We selected 26 articles, which were manually consulted in Portuguese and English indexed in electronic databases SciELO, LILACS and PubMed starting from descriptors Espondiloartropatias, Espondilite Anquilosante, Artrite Reativa, Artrite Psoriásica crossed with keyword Fisioterapia, all according to the Descriptors in Health Sciences (DeCS). Results: We analyzed 178 articles of which 147 articles were excluded because they do not fit the selection criteria and 26 met the inclusion criteria, allowing the theoretical foundation and problems of researched subject. Conclusion: Early diagnosis of seronegative spondyloarthropathies with kinesiotherapy - with emphasis on hydrokinesiotherapy - reduced pain, improved functional capacity, improved range of movement, decreased inflammatory process and improvement of quality of life of patients.

Artritis reactiva por virus de Epstein Barr

Paciente masculino de 24 años de edad, con antecedente de buena salud, que inicio un cuadro de fiebre, faringitis, adenopatías cervicales y hepatoesplenomegalia; 3 días después, se acompaña de, artritis aditiva en muñeca derecha y rodilla izquierda, y tenosinovitis de los dedos de los pies que tomaron aspecto de dedos en salchicha, sin obtener respuesta favorable con 150 mg diarios indometacina más antibióticos; luego de los estudios realizados durante dos ingresos, se concluyó como una artritis reactiva por virus de Epstein Barr, lo cual se confirmo por estudios virológicos en el Instituto Pedro Kouri, con respuesta favorable a los esteroides y la azulfidina

Masculine patient of 24 years of age, with antecedent of good health, health history homeof fever, pharyngitis, cervical lymphadenopathy and hepatosplenomegaly; 3 days afterwards, accompanies of, additive arthritis in right doll and left knee, and tenosinovitis of the fingers of the feet that took appearance of fingers in sausage, without obtaining favorable answer with indomethacin at doses of 150 mg daily more antibiotics; afterwards of the studies realized during two income, concluded like a reactive arthritis by virus of Epstein Barr, which confirm by virological studies in the Pedro Kouri Institute, with favorable answer to the steroids and the azulfidine.

Artritis postestreptocócica en un paciente adulto: reporte de caso / Post-streptococcal arthritis in an adult patient: case report

La artritis postestreptocóccica es una entidad que se manifiesta por compromiso articular secundario a infección orofaríngea secundaria a Streptococcus beta hemolítico del grupo A. Se presenta el caso de un paciente de 43 años, previamente sano, que siete semanas después de un episodio de faringoamigdalitis desarrolló un cuadro oligoarticular, aditivo, no migratorio, con lesiones dermatológicas. Se documentaron títulos elevados de antiestrep-tolisina O, cumpliendo con los criterios propuestos por Ayoub y Ahmed, y se diagnosticó artritis postestreptocóccica. El paciente presentó respuesta adecuada a dosis moderadas de corticoesteroides.

Post-streptococcal reactive arthritis is an entity that includes joint involvement secondary to oropharyngeal infectious process associated with beta hemolytic group A Streptococcus. We report a clinical case of 43 year-old man, previously healthy, that seven weeks after a tonsillopharyngitis, developed an additive, non-migratory oligoarthritis, with skin lesions. High titers of antistreptolysin O antibodies are documented, with fulfillment of Ayoub and Ahmed proposed criteria for post streptococcal reactive arthritis. The patient presented adequate response to moderate doses of corticosteroids.

Oligoartritis aguda tras tratamiento con BCG en paciente con neoplasia devejiga: reporte de caso / Acute oligoarthritis following BCG treatment for urinary bladder cancer: A case report

La instalación del bacilo de Calmette-Guérin es un tratamiento seguro y eficaz para elcáncer superficial de vejiga. La aparición de artritis tras su administración es un raro efectosecundario.Presentamos el caso clínico de un varón de 65 anos ˜ que desarrolló oligoartritis asimétricadespués de la sexta instalación del bacilo de Calmette-Guérin, que fue resuelta tras el cesedel tratamiento y la administración de antiinflamatorios no esteroideos...

Enteric Pathogens and Reactive Arthritis: A Systematic Review of Campylobacter, Salmonella and Shigella-associated Reactive Arthritis.

Reactive arthritis (ReA) is a spondyloarthropathic disorder characterized by inflammation of the joints and tissues occurring after gastrointestinal or genitourinary infections. Diagnostic criteria for ReA do not exist and, therefore, it is subject to clinical opinion resulting in cases with a wide range of symptoms and definitions. Using standardized diagnostic criteria, we conducted a systematic literature review to establish the global incidence of ReA for each of the three most commonly-associated enteric pathogens: Campylobacter, Salmonella, and Shigella. The weighted mean incidence of reactive arthritis was 9, 12, and 12 cases per 1,000 cases of Campylobacter, Salmonella and Shigella infections respectively. To our knowledge, this is the first systematic review of worldwide data that use well-defined criteria to characterize diarrhoea-associated ReA. This information will aid in determining the burden of disease and act as a planning tool for public-health programmes.

Role of 30 kDa antigen of enteric bacterial pathogens as a possible arthritogenic factor in post-dysenteric reactive arthritis.

Background: Reactive arthritis (ReA)/Reiter’s syndrome (RS) may be caused as a sequel of infections caused by enteric bacterial pathogens, although the mechanisms through, which different pathogens cause similar disease are not clear. Aim: This study was done to look for the presence and role of any common bacterial antigen among the pathogens isolated from such patients. Materials and Methods: A total of 51 patients of ReA and 75 controls (three groups of 25 subjects each: Group 1: Patients who did not develop arthritic complications within 3 months after bacillary dysentery/diarrhea; Group 2: Patients with other arthritic diseases and Group 3: Normal healthy subjects) were included. The isolated enteric pathogens were tested to detect the immunodominant antigens. Results and Conclusions: A common 30 kDa antigen was found to be specifi cally present among seven arthritogenic enteric bacterial strains belonging to three genera, Salmonella, Shigella and Hafnia. Post-dysenteric ReA patients’ sera show higher levels of immunoglobulin G, immunoglobulin M and immunoglobulin A antibodies against this antigen as compared to the controls. Lymphocytes of ReA patients recognize this antigen, proliferate and produce interleukin-2 in response to this antigen more than the lymphocytes of controls. 30 kDa antigen may be a common arthritogenic factor associated with postdysenteric ReA/RS. The association of Hafnia alvei with post-dysenteric ReA is described for the fi rst time. Four cases of mycobacterial ReA had an association with this antigen, suggesting that the arthritogenic antigen of mycobacteria and enteric bacteria may be of a similar nature.

Reactive Arthritis / 대한내과학회지

Reactive arthritis (ReA) is an inflammatory joint disease following genitourinary or gastrointestinal bacterial infection, most commonly by Chlamydia trachomatis. It is characterized by the inflammation in the large joints of lower extremities such as ankles and knees and sometimes accompanied by enthesitis (Achilles tendinitis, plantar fasciitis) and sacroiliitis, which made it classified as spondyloarthritis. Although there are various theories about the role of persistent bacterial infection, toll-like receptor, and human leukocyte antigen-B27 in the pathogenesis of ReA, many things are still unknown. Clinical studies about the ReA have not been done well due to the absence of widely recognized diagnostic criteria. Although the evidence of prior infection is necessary for the diagnosis, it is not uncommon that preceding infection is asymptomatic, which make it difficult to diagnose ReA. Therefore, it is necessary to consider ReA in patients suffering from inflammation in the joints of lower extremities with unknown cause. Nonsteroidal anti-inflammatory drugs, corticosteroid, and sulfasalazine have been used in the treatment of ReA but antibiotics don't seem to work. Regarding the therapeutic role of anti-tumor necrosis factor agents, there are some controversies.

Reactive arthritis in tuberculosis: A case of Poncet’s disease

Reactive arthritis and erythema are uncommon presentations of tuberculosis (TB). Reactive arthritis in tuberculosis (TB) is known as Poncet’s disease, a rare aseptic form of arthritis observed in patients with active TB. We report a case of Poncet’s disease in a 20-year old man whose reactive arthritis overshadowed other clinical symptoms of TB resulting in delayed diagnosis and treatment. Although a conclusive diagnosis of Poncet’s disease is not possible, reactive immunologic reactions such as reactive arthritis and erythema nodosum even without respiratory symptoms should raise suspicion on possible TB. Thus, taking a thorough medical history as well as performing relevant examinations and investigations for possible TB will help expedite the diagnostic process.

Reactive Arthritis in a Patient with Chlamydia trachomatis Infection / 대한정형외과학회잡지

The authors report a case of reactive arthritis that was caused by sexual contact as below example. A 36-year-old male visited our center due to sudden pain in wrist joint, the 3rd finger, knee joint, and achilles tendon. There were no specific abnormalities for the immunoserologic tests and magnetic resonance imaging; however, we found a positive test result for the polymerase chain reaction test of urine that identified Chlamydia trachomatis. Through considering the patient's medical history and various examinations, we considered the possibility of reactive arthritis, to the exclusion of alternate diagnosis. According to the our diagnosis, the patient was treated with antibiotics and nonsteroidal anti-inflammatory drugs and we found that the patient was getting better. Therefore the authors think that we have to contemplate the possibility of reactive arthritis and treat appropriately in patients with similar symptoms.

Associação entre os níveis séricos de potenciais biomarcadores com a presença de fatores relacionados à atividade clínica e ao mau prognóstico em espondiloartrites / The association between serum levels of potential biomarkers with the presence of factors related to the clinical activity and poor prognosis in spondyloarthritis

INTRODUÇÃO: Biomarcadores séricos, tradicionalmente associados à atividade inflamatória e mau prognóstico em doenças reumáticas, não apresentam a mesma relação nas espondiloartrites. OBJETIVO: Estabelecer uma associação entre os níveis séricos de biomarcadores com a presença de fatores associados com a atividade clínica e com o mau prognóstico nas espondiloartropatias. MÉTODOS: Sessenta e dois pacientes (13 com artrite reativa, 19 com espondilite anquilosante e 30 com espondiloartropatia indiferenciada) foram comparados a 46 controles sadios. Foram realizadas avaliações clínicas, radiológicas e laboratoriais. Os resultados foram analisados de acordo com a presença de uveíte, entesite, lombalgia inflamatória, artrite, HLA-B27 e comprometimento das articulações sacroilíacas. Os biomarcadores utilizados foram: VHS, PCRus, SAA, LBP, FSC-M e MMP-3, além da dosagem dos níveis séricos das citocinas: IL-17, IL-6, IL-1α , TNF-α , IFN-γ, e IL-23. RESULTADOS: Quarenta e três (69,4%) pacientes eram homens. A média de idades foi de 31,9 ± 9,9 anos, enquanto a idade média para o aparecimento dos sintomas foi de 26,9 ± 7,3 anos. HLA-B27 foi positivo em 26 (41,9%) dos pacientes, lombalgia inflamatória esteve presente em 42 (67,7%), artrite em 44 (71,0%) e entesite em 34 (54,8%) pacientes. Os níveis séricos de IL-17, IL-23, TNF-α , IL-6, IL-1α e PCRus foram mais elevados em pacientes com espondiloartropatia em comparação com os controles. Os valores de PCRus (P = 0,04), IL-6 (P = 0,003), IL-1α (P = 0,03), e LBP (P = 0,03) se associaram de maneira significativa com presença de HLA-B27, dor lombar inflamatória e artrite. CONCLUSÃO: O aumento dos níveis séricos de PCRus, IL-6, IL-1α e LBP apresentaram associação com fatores relacionados a atividade clínica e mau prognóstico em pacientes com espondiloartrites.

BACKGROUND: Serum biomarkers traditionally associated with inflammatory activity and a poor prognosis in rheumatic diseases do not show the same relationship in spondyloarthritis. OBJECTIVE: To establish the association between serum levels of potential biomarkers with the presence of factors related to clinical activity and poor prognosis in spondyloarthritis. METHODS: Sixty-two patients were included: 13 with reactive arthritis, 19 with ankylosing spondylitis, and 30 with undifferentiated spondyloarthritis. The results were compared with those from 46 healthy controls. Clinical, radiological, and laboratory characteristics were assessed. The results were analyzed based on the presence of uveitis, enthesitis, inflammatory back pain, arthritis, HLA-B27 and sacroiliac involvement. The analyzed biomarkers included ESR, US-CRP, SAA, LBP, FSC-M, and MMP-3; and cytokine serum levels measured were: IL-17, IL-6, IL-1α , TNF-α , IFN-γ, and IL-23. RESULTS: Forty-three (69.4%) patients were male. The average age was 31.9 ± 9.9 years and the age at the onset of symptoms was 26.9 ± 7.3 years. HLA-B27 was positive in 26 (41.9%) patients, inflammatory back pain in 42 (67.7%), arthritis in 44 (71.0%), and enthesitis in 34 (54.8%). IL-17, IL-23, TNF-α , IL-6, IL-1α , and US-CRP levels were significantly higher in patients with SpA when compared to controls. US-CRP (P = 0.04), IL-6 (P = 0.003), IL-1α (P = 0.03), and LBP (P = 0.03) levels were associated with presence of HLA-B27, inflammatory back pain, and arthritis. CONCLUSION: An increase in serum levels of US-CRP, IL-6, IL-1α , and LBP was correlated with factors associated with clinical activity and poor prognosis in spondyloarthritis.

Entesis, entesopatía y espondiloartritis / Entheses, enthesopathy and spondyloarthritis

Las espondiloartritis (SpA) comprenden un grupo heterogéneo de enfermedades inflamatorias articulares que comparten varias características clínicas y de laboratorio, una fuerte tendencia a la asociación familiar dada por una susceptibilidad genética relacionada con la presencia del antígeno de histocompatibilidad HLA-B27, compromiso de las entesis, afectación predominante del esqueleto axial, artritis asimétrica de grandes articulaciones en los miembros inferiores y relación con la infección como factor desencadenante de las mismas. Las SpA incluyen varios subtipos: la artropatía psoriásica (PsA), las espondiloartritis no definidas (uSpA), la artritis asociada a enfermedades inflamatorias intestinales (EII), la artritis reactiva (ReA) y la espondilitis anquilosante (EA). La característica histopatológica fundamental de las SpA es la entesitis, la cual está dada por la inflamación patológica de las entesis comprometidas, que son los sitios de inserción de los tendones, ligamentos, fascias y cápsulas articulares al hueso; así como también el sitio de unión del cartílago al hueso subcondral.

Spondyloarthritis are a heterogeneous group of inflammatory joint diseases, which share clinic and laboratory characteristics, a strong relation to hereditary factors (mainly antigen HLA-B27), enthesesitis (most commonly affecting axial skeleton), large joints asymmetric arthritis mostly in lower limbs, and its relationship with infections as a triggering factor. Spondyloarthitis include various subtypes: Psoriatic Arthropathy (PsA), Undifferentiated Spondiloarthritis (uSpA), Arthritis related to inflammatory bowel disease (IBD), Ankylosing Spondylitis (AS) and Reactive Arthritis (ReA). Fundamental histopathologic characteristic of the Spondyloarthritis is enthesitis on the sites of attachment of tendons, ligaments, joint capsules and fascias to the bone, but also over the cartilage at the subchondral bone.

Artrite de Poncet: relato de caso / Poncet's arthritis: case report

A doença de Poncet é uma condição clínica rara, caracterizada por um acometimento poliarticular em um paciente com diagnóstico de tuberculose, sem evidência de invasão direta do bacilo nas articulações, configurando uma artrite reativa. Documentamos um caso em Porto Alegre: um homem de 56 anos, com evidência de poliartrite aditiva de grandes articulações, investigada há 5 anos, sem diagnóstico definido. Ele havia sido submetido a uma nefrectomia unilateral há 5 anos, e o exame anatomopatológico do órgão revelou tuberculose renal. O teste tuberculínico atual revelou um forte reator (PPD = 20 mm). Análise do líquido sinovial não demonstrou invasão direta do bacilo. Foi instituído tratamento empírico com tuberculostáticos com remissão clínica após 2 meses. Embasados nesses dados, foi feito diagnóstico de doença de Poncet.

Poncet's disease is a rare clinical condition, characterized by polyarticular impairment in a patient diagnosed with tuberculosis, with no evidence of direct bacillary invasion of the joints, constituting reactive arthritis. We report a case of a 56-year old, white male from the city of Porto Alegre, with evidence of additive polyarthritis of the large joints, investigated for five years, and with no defined diagnosis. The patient had undergone unilateral nephrectomy five years before, and the anatomicopathological exam of the specimen revealed renal tuberculosis. The current tuberculin test was strongly reactive (PPD = 20 mm). Analysis of the synovial fluid showed no direct bacillary invasion. Tuberculostatic treatment was initiated and clinical remission occurred after two months. The diagnosis of Poncet's arthritis was established.

Artritis reactiva asociada con bacteriemia por Brevundimonas diminuta / Reactive arthritis associated with Brevundimonas diminuta bacteremia

Dentro del grupo de las espondiloartritis, la artritis reactiva se define como una inflamación articular desencadenada por una infección bacteriana extra-articular. Existen pocos reportes de artritis reactiva asociada con bacteriemia simultánea causada por patógenos diversos. Brevundimonas diminuta es un bacilo Gram negativo aislado ocasionalmente de especímenes clínicos. Reportamos el caso de una paciente, sin inmunodeficiencia conocida, con artritis reactiva y bacteriemia simultánea por B. diminuta.Palabras clave: artritis reactiva, Brevundimonas diminuta, bacteriemia.

Within the group of spondyloarthritis, reactive arthritis is defined as a joint inflammation triggered by an extra-articular bacterial infection. There are few reports of reactive arthritis associated with bacteremia caused by different pathogens. Brevundimonas diminuta is a Gram-negative bacillus isolated occasionally from clinical specimens. We report a patient with reactive arthritis and concurrent B. diminuta bacteremia, without known immune deficiency.Key words: reactive arthritis, Brevundimonas diminuta, bacteremia.

Macular Infarction Associated with Reactive Arthritis

A 53-year-old woman visited the Department of Rheumatology with a chief complaint of a 3-day history of fever and chills and also presented with pain occuring in both knees at the time of outpatient visit. Based on rheumatologic and hematological lab studies, ultrasonography, and a needle aspiration biopsy of the articular cavity, the patient was diagnosed with reactive arthritis. On hospitalization day 3, consultation with the Department of Ophthalmology was requested regarding decreased visual acuity lasting for 3 days. Upon ophthalmologic examination, the corrected visual acuity was 0.1 in the right eye and 0.05 in the left eye. Upon slit lamp microscopy, there were no abnormal findings in the anterior segment. Upon fundus examination, however, there were yellow-white lesions in the macular area of both eyes. Fluorescein angiographywas performed to assess the macular lesions, and the findings were suggestive of macular infarction in both eyes. Due to a lack of other underlying disease, a past surgical history, and a past history of drug administration, the patient was diagnosed with macular infarction in both eyes associated with reactive arthritis. To date, there have been no other such cases reported. In a patient with reactive arthritis, we experienced a case of macular infarction in both eyes, which occurred without association with a past history of specific drug use or underlying disease. Herein, we report our case, with a review of the literature.