Hypertrophic Pachymeningitis, Associated with Eosinophilic Granulomatosis with Polyangiitis, and ANCA-Negative Serology.

Background: Hypertrophic pachymeningitis (HP) is a disease with diverse aetiologies, including the autoimmune one, either associated with antineutrophil cytoplasmic antibodies or immunoglobulin G4. Case description: A 65-year-old woman with a history of systemic arterial hypertension, presented with intense progressive headaches. HP and hemispheric vasogenic oedema were observed by nuclear magnetic resonance (NMR) study. During the six months before the headache, she had developed progressive hearing loss which she attributed to age. A biopsy of dura mater showed necrotising vasculitis with peripheral inflammatory infiltrate, made up of accumulations of epithelioid cells and multinucleated giant cells, and abundant eosinophils. A final diagnosis of HP with eosinophilic granulomatosis with polyangiitis (EGPA) was made. Discussion: The patient had eosinophilic granulomatosis with polyangiitis (EGPA) histology, ANCA-negative serology and HP. This case is important because it shows that EGPA seems to have a spectrum of clinical diseases, including HP with negative serology, and bilateral sensorineural hearing loss. Conclusion: We are facing a wide spectrum of EGPA, breaking the paradigm of only systemic involvement. LEARNING POINTS: Hypertrophic pachymeningitis (HP) has several aetiologies; if the systemic investigation is not contributory to a diagnosis, a meningeal biopsy is necessary.This is the first case report of HP, associated with eosinophilic granulomatosis with polyangiitis (EGPA), and ANCA-negative serology.EGPA is probably a spectrum of diseases with predominant systemic involvement, but there may be cases where there is histological evidence, without the systemic context or positive serology.

Distinct features of ANCA-associated hypertrophic pachymeningitis compared to other etiologies: findings from a study of 74 patients.

OBJECTIVES: We aimed to characterize the clinical and radiological features, and outcomes, of a large cohort of hypertrophic pachymeningitis (HP) patients from a single center. METHODS: We conducted a retrospective study at a tertiary referral center, encompassing patients diagnosed with HP between 2003 and 2022. The diagnosis of HP relied on the identification of thickening of the dura mater via magnetic resonance imaging (MRI) of the brain or spine. RESULTS: We included 74 patients with a mean age of 43.6 ± 14.2 years, of whom 37 (50%) were male. Among them, 32 (43.2%) had an immune-mediated origin, including 21 with granulomatosis with polyangiitis (GPA) (predominantly PR3-ANCA positive), four with systemic lupus erythematosus, three with IgG4-related disease, three with idiopathic HP, and one with rheumatoid arthritis. Non-immune-mediated HP accounted for 45 cases (56.8%). Within this category, 21 (28.4%) were infectious cases, with 14 being Mycobacterium tuberculosis infection (TB-HP), and 21 (28.4%) were malignancy-associated HP. Clinical and MRI characteristics exhibited variations among the four etiological groups. Hypoglycorrhachia was primarily observed in infectious and malignancy-associated HP. Immune-mediated HP was associated with a peripheral pattern of contrast enhancement and the Eiffel-by-night sign. MRI features strongly indicative of TB-HP included leptomeningeal involvement, brain parenchymal lesions, and arterial stroke. MPO-ANCA GPA was associated with a higher prevalence of spinal HP. CONCLUSIONS: Within our cohort, GPA and Mycobacterium tuberculosis emerged as the predominant causes of HP. We identified significant disparities in clinical and radiological features among different etiologies, which could have implications for diagnosis.

Clinical Manifestations of Wegener Granulomatosis in Iranian Ethnicities Using the K-Means Algorithm: A Descriptive Study.

Introduction Wegener granulomatosis (WG) appears with clinical symptoms, including recurrent respiratory infection, renal manifestations, and nonspecific systemic symptoms. Objective To study the clinical manifestations of WG in Iranian ethnicities, and data on 164 patients were recorded from 2013 to 2018. Methods The data included demographics, symptoms, and the Birmingham Vasculitis Activity Score (BVAS). The symptoms involved the following sites: the nose, sinus, glottis, ears, lungs, kidneys, eyes, central nervous system, mucous membranes, skin, heart, stomach, intestine, as well as general symptoms. The clinical manifestations of nine ethnicities were analyzed. Results In total, 48% of the patients were male and 51% were female, with a median age of 51 years. The BVAS was of 15.4, the sites most involved were the sinus ( n = 155), nose ( n = 126), lungs ( n = 125), and ears ( n = 107). Gastrointestinal ( n = 14) and cardiac ( n = 7) involvement were less common. Among the patients, 48.17% were Persian, 13.41% were Azari, 11.17% were Gilaki, 11.17% were Kurd, and 10.9% were Lor. Conclusion Our findings indicated that the sinus, nose, lungs, and ears were the sites most involved, and gastrointestinal and cardiac involvement were less common. In the present study, involvement of the upper and lower respiratory tract was higher than that reported in Western and Asian case series. Moreover, we report for the first time that, in all patients with ear involvement, the left ear was the first to be affected. The clinical manifestations among Iranian ethnicities were not different, and the Gilaki ethnicity had the highest BVAS, mostly because the weather was humid; therefore, in Iran, in areas with humidity, the rate of the disease was higher.

Clinical Manifestations of Wegener Granulomatosis in Iranian Ethnicities Using the K-Means Algorithm: A Descriptive Study

Abstract Introduction Wegener granulomatosis (WG) appears with clinical symptoms, including recurrent respiratory infection, renal manifestations, and nonspecific systemic symptoms. Objective To study the clinical manifestations of WG in Iranian ethnicities, and data on 164 patients were recorded from 2013 to 2018. Methods The data included demographics, symptoms, and the Birmingham Vasculitis Activity Score (BVAS). The symptoms involved the following sites: the nose, sinus, glottis, ears, lungs, kidneys, eyes, central nervous system, mucous membranes, skin, heart, stomach, intestine, as well as general symptoms. The clinical manifestations of nine ethnicities were analyzed. Results In total, 48% of the patients were male and 51% were female, with a median age of 51 years. The BVAS was of 15.4, the sites most involved were the sinus (n =155), nose (n = 126), lungs (n = 125), and ears (n =107). Gastrointestinal (n = 14) and cardiac (n = 7) involvement were less common. Among the patients, 48.17% were Persian, 13.41% were Azari, 11.17% were Gilaki, 11.17% were Kurd, and 10.9% were Lor. Conclusion Our findings indicated that the sinus, nose, lungs, and ears were the sites most involved, and gastrointestinal and cardiac involvement were less common. In the present study, involvement of the upper and lower respiratory tract was higher than that reported in Western and Asian case series. Moreover, we report for the first time that, in all patients with ear involvement, the left ear was the first to be affected. The clinical manifestations among Iranian ethnicities were not different, and the Gilaki ethnicity had the highest BVAS, mostly because the weather was humid; therefore, in Iran, in areas with humidity, the rate of the disease was higher.

Granulomatosis con poliangeítis. A propósito de un caso

La granulomatosis con poliangeítis es una vasculitis sistémica, necrosante y granulomatosa que afecta el tracto respiratorio superior e inferior y los riñones. Se presenta el caso de una paciente blanca, de 59 años de edad, hipertensa y fumadora inveterada, que ingresó por presentar síntomas constitucionales, orinas turbias y hemáticas, así como creatininemia elevada con valor previo normal. Con impresión diagnóstica inicial de infección del tracto urinario se indica antibioticoterapia. Después del tercer día de iniciado el tratamiento, mejoraron los síntomas constitucionales y, de forma progresiva, comenzó con manifestaciones multiorgánicas (renal, respiratoria, cutánea y musculoesquelética) sugestivas de vasculitis sistémica. Como elementos significativos, en exámenes complementarios se detectaron azoados y reactantes de fase aguda aumentados, sedimento urinario activo, imagen nodular en vértice pulmonar derecho y microhemorragias multifocales en ambos campos pulmonares, detectados mediante tomografía computarizada y c-ANCA altamente positivo. Se indicó tratamiento inmunosupresor y citotóxico potente, obteniéndose control inicial de las manifestaciones graves de la enfermedad. Evolutivamente desarrolló complicaciones propias de la entidad y secundarias al tratamiento médico, que la hicieron tributaria de terapia de sustitución renal, falleciendo a los dos años de recibir hemodiálisis iterada. El cuadro clínico, unido a los estudios imagenológicos e inmunológicos (c-ANCA), fueron elementos claves para realizar el diagnóstico.

Granulomatosis with polyangiitis is a systemic, necrotizing, granulomatous vasculitis that affects the upper and lower respiratory tract and kidneys. The case of a 59-year-old white female patient, who is hypertensive and inveterate smoker, is presented; she was admitted for presenting constitutional symptoms, turbid and bloody urine, as well as elevated creatininemia with a normal previous value. With the initial diagnostic impression of urinary tract infection, antibiotic therapy was indicated. After the third day of starting treatment the constitutional symptoms improved, and progressively began with multiorgan manifestations (renal, respiratory, skin and musculoskeletal) suggestive of systemic vasculitis. As significant elements, complementary examinations detected increased nitrogen and acute phase reactants, active urinary sediment, nodular image in the right lung apex and multifocal microhemorrhages in both lung fields through computed tomography, and highly positive c-ANCA. Potent immunosuppressive and cytotoxic treatment was indicated, obtaining initial control of severe manifestations of the disease. Evolutionarily she developed complications specific to the entity and secondary to medical treatment which made her subject to renal replacement therapy, dying two years after receiving iterated hemodialysis. The clinical characteristics, together with the imaging and immunological studies (c-ANCA) were key elements to make the diagnosis.

Criterios broncoscópicos, laboratoriales y anatomopatológicos de enfermedad de la vía aérea en pacientes diagnosticados con granulomatosis con poliangitis / Bronchoscopic, laboratory and anatomopathological criteria for airway disease in patients diagnosed with granulomatosis with polyangiitis

Introducción: los pacientes con granulomatosis con poliangitis (GPA) pueden presentar compromiso de la vía aérea superior (VAS) o inferior (VAI). Objetivos: describimos las manifestaciones endoscópicas de las vías respiratorias, los hallazgos histológicos y los anticuerpos anticitoplasma de neutrófilos (ANCA) en un grupo de pacientes con GPA. Métodos: estudio retrospectivo de historias clínicas de pacientes con GPA sometidos a broncoscopia entre 2012 y 2019. Se analizaron hallazgos de la vía aérea, biopsias y ANCA. Resultados: se incluyeron 40 pacientes, con una edad media de 46,92±17,61 años, predominantemente del sexo femenino (67,5%). Se observó afectación de la vía aérea en el 90% (n=36). El C-ANCA fue reactivo en el 63,9%, P-ANCA en el 25%, ANCA doblemente reactivo en el 8,33% y no reactivo en el 20%. Los hallazgos comunes en la vía aérea superior (VS) fueron sinusitis crónica (41,7%), destrucción del tabique nasal (16,7%); y en la vía aérea inferior (AI): estenosis traqueobronquial (38,9%), traqueobronquitis (25%). Los hallazgos más frecuentes de las biopsias broncoscópicas fueron proceso inflamatorio polimorfonuclear (61,9%) y necrosis geográfica (47,6%). Conclusión: la vía aérea está comprometida hasta en un 90% de los pacientes con GPA. ANCA no reactivos no descartan esta posibilidad. La sinusitis crónica y los procesos fibroestenóticos traqueobronquiales fueron los hallazgos endoscópicos más comunes. La vasculitis en biopsias se encontró en una minoría de casos.

Introduction: patients with granulomatosis with polyangiitis (GPA) may present upper airway (UA) and lower airway (LA) involvement. Objectives: we describe the endoscopic manifestations of the airways, histological findings from biopsied tissue and antineutrophilic cytoplasm antibody (ANCA) in a group of patients with GPA. Methods: retrospective study of medical records of patients with GPA undergoing bronchoscopy between 2012 and 2019. Airway findings, results of biopsies performed and ANCA results were analyzed. Results: 40 patients were included, with a mean age of 46.92±17.61 years and predominantly female (67.5%). Airway involvement was observed in 90% (n=36). The C-ANCA was reactive in 63.9%, P-ANCA in 25%, doubly reactive ANCA in 8.33% and non-reactive in 20%. The findings in upper airway (UA) were: chronic sinusitis (41.7%), destruction of the nasal septum (16.7%); and in lower airway (LA) were: tracheobronchial stenosis (38.9%) and tracheobronchitis (25%). The pathological findings most common of bronchoscopic biopsies were: polymorphonuclear inflammatory process (61.9%) and geographic necrosis (47.6%). Conclusion: the airway is involved in up to 90% of patients with GPA. Non-reactive ANCA does not rule out this possibility. Chronic sinusitis and tracheobronchial fibrostenotic processes were the most common endoscopic findings. Vasculitis in biopsies was found in a minority of cases.

Bloqueo aurículoventricular en la granulomatosis con poliangeítis (Granulomatosis de Wegener). Caso clínico y revisión de la literatura / Atrioventricular block in granulomatosis with polyangiitis (Wegener's granulomatosis). Case report and review of literature

La Granulomatosis con Poliangeítis (GPA), o Granulomatosis de Wegener, es una vasculitis sistémica de pequeño y mediano vaso inmunológicamente mediada, que preferentemente compromete la vía aérea superior, pulmones y riñones, y es poco frecuente que se asocie a manifestaciones cardíacas. El compromiso del sistema éxcitoconductor (SEC) es muy raro y se han descrito casos aislados de distintos grados de bloqueo aurículoventricular (BAV). Describimos el caso de un paciente con GPA que durante una recidiva de su enfermedad consultó por disnea, documentándose signos de bajo débito, bradicardia de 30/ min, BAV de 2° grado avanzado y bloqueo completo de rama izquierda (BCRI) en el electrocardiograma (ECG). Se presenta una revisión de la literatura y discutimos sus causas, la evolución y manejo de estos pacientes.

Granulomatosis with Polyangiitis (GPA), or Wegener's Granulomatosis, is an immunologically mediated systemic vasculitis of small and medium vessels, which commonly compromises the upper airway, lungs, and kidneys and is rarely associated with cardiac manifestations. Compromise of the cardiac conduction system is rare, and isolated cases of different degrees of atrioventricular block (AVB) have been described. We report a case of a 49-year-old male patient previously diagnosed with GPA 3 years ago, who presented to the emergency department with dyspnea, clinical signs of low output, bradycardia of 30/min, advanced second-degree AVB and complete left bundle branch block (LBBB) on the ECG. A literature review is presented, and we discuss the causes, evolution, and management of this GPA complication.

Manifestaciones periodontales de la Granulomatosis de Wegener: Reporte de un caso clínico / Periodontal manifestations of Wegener's granulomatosis: Case report

La granulomatosis de Wegener o granulomatosis con Poliangitis (GPA) es una enfermedad caracterizada por inflamación y necrosis de las paredes de los vasos sanguíneos. Es de etiología desconocida, baja prevalencia y alta agresividad. Esta enfermedad puede comprometer los tejidos bucales causando agrandamiento e inflamación del tejido gingival. Se reporta el caso de un paciente de género masculino que manifiesta aumento de volumen de la encía e inflamación asociado al diagnóstico de granulomatosis de Wegener. La lesión fue eliminada quirúrgicamente y el diagnóstico se logró al combinar los hallazgos serológicos del test ANCA, manifestaciones periodontales y análisis histopatológico. El paciente fue tratado con metotrexato y corticoesteroides y no presenta recidiva de la lesión luego de 2 años de control. En este artículo se analizan las manifestaciones periodontales asociadas a la GPA resaltando la importancia de un adecuado diagnóstico de lesiones periodontales caracterizadas por agradamiento gingival e inflamación.

Wegener's granulomatosis or granulomatosis with polyangiitis (GPA) is a disease characterized by inflammation and necrosis of the blood vessel walls. It is of unknown etiology, low prevalence and high degree of aggressiveness. This disease can compromise the oral tissues, causing enlargement and inflammation of the gingival tissues. The case of a male patient who presented rapidly growing gingival tissue enlargement and inflammatory characteristics associated with the diagnosis of Wegener's granulomatosis is reported. The lesion was removed surgically and the diagnosis was achieved by combining the serological findings of the ANCA test, periodontal manifestations and histopathological analysis of the lesion. The patient was treated with methotrexate and corticosteroids and the lesion did not reappear after 2 years of control. In this article, the periodontal manifestations associated with GPA are analyzed, highlighting the importance of an adequate diagnosis of periodontal lesions characterized by gingival enlargement and inflammation.

Limited granulomatosis with polyangiitis in children with idiopathic orbital inflammation: a case series and literature review.

Idiopathic orbital inflammation (IOI) is a diagnosis of exclusion, but the exclusion of other inflammatory diseases of the orbit is broad and relies on clinician experience, response to corticosteroid, or biopsy. This study aimed to investigate the presence of granulomatosis with polyangiitis (GPA) in patients initially diagnosed as IOI and describe its clinicopathological features, ANCA status, treatment, and outcome. We performed a retrospective case series study of children diagnosed with limited GPA (L-GPA) in patients with IOI. A systematic review of the literature was performed in children with GPA and orbital mass. Eleven of 13 (85%) patients with IOI had L-GPA. Two additional patients with orbital mass and L-GPA were included in this analysis. The median age was 10 years, and 75% were female. Twelve cases were ANCA positive and 77% were MPO-pANCA positive. Most patients had a poor response to treatment and had a high relapse rate. Based on literature review, 28 cases were found. Most (78.6%) were female with a median age of 9 years. Three patients were misdiagnosed as IOI. Patients with L-GPA more frequently had MPO-pANCA positivity (35%) than children with systemic GPA (18%) and were less often PR3-cANCA positive than patients with systemic GPA (18% vs. 46%). L-GPA accounts for a high prevalence of children diagnosed as IOI. The high prevalence of MPO-pANCA observed in our study may be related to L-GPA rather than with the orbital mass. Long-term follow-up, orbital biopsy, and serial ANCA testing are necessary to exclude GPA in patients with IOI.

Immune-Mediated Hypertrophic Pachymeningitis and its Mimickers: Magnetic Resonance Imaging Findings.

Hypertrophic pachymeningitis (HP) is a rare and chronic inflammatory disorder presenting as localized or diffuse thickening of the dura mater. It can be idiopathic or an unusual manifestation of immune-mediated, infectious, and neoplastic conditions. Although some cases may remain asymptomatic, HP can lead to progressive headaches, cranial nerve palsies, hydrocephalus, and other neurological complications, which makes its recognition a fundamental step for prompt treatment. Regarding the diagnosis workup, enhanced MRI is the most useful imaging method to evaluate dural thickening. This article addresses the MR imaging patterns of immune-mediated HP, including immunoglobulin G4-related disease, neurosarcoidosis, granulomatosis with polyangiitis, rheumatoid pachymeningitis, and idiopathic HP. The main infectious and neoplastic mimicking entities are also discussed with reference to conventional and advanced MR sequences.

Oral granulomatosis with polyangiitis a systematic review.

OBJECTIVE: Granulomatosis with polyangiitis is an unusual multisystemic inflammatory disease, with vasculitis of small- and medium-sized vessels, with a predilection for upper lower airways and kidneys. The etiology remains unknown although it may originate from different stimuli, in genetically susceptible patients. MATERIALS AND METHODS: A detailed database search was performed. The variables were demographics, localization, histopathological findings, antineutrophil cytoplasmic autoantibody, cytoplasmic (c-ANCA) tests, treatment, and follow-up. RESULTS: Fifty-two cases were identified; the mean age was 49.6 years, with a range from 6 to 87 years. It was most frequently seen in females (57.7%). The most common race was white (59.6%). The most frequent location was in the maxillary gingiva (28.8%), followed by both the upper and lower gingiva (19.2%). The most common clinical presentation was "strawberry gingivitis" (61.5%). The main symptom was pain, in 50%. Regarding the c-ANCA test, it was positive in 71.2% of cases. The most common therapy was prednisone and cyclophosphamide, utilized in 51.9%. The average follow-up was 23.6 months, and 88.5% of patients were still alive at follow-up. CONCLUSION: The diagnosis initially was difficult to establish, an early diagnosis and treatment are mandatory. If untreated the disease can be associated with morbidity and mortality. For the oral clinician, this disease needs to be addressed in the differential diagnosis of oral lesions.

Hidronefrosis como manifestación inusual y distractora en el diagnóstico de una vasculitis ANCA positiva. A propósito de un caso / Hydronephrosis as an unusual and distracting manifestation in the diagnosis of ANCA-positive vasculitis. About a case

La nefropatía obstructiva se considera una manifestación inusual en las vasculitis ANCA. Se presenta el caso de un masculino de 38 años, con granulomatosis con poliangitis e hidronefrosis unilateral, y revisión de la literatura. Masculino de 38 años, sano, quien consulta por cuadro subagudo de odinofagia, síntomas constitucionales y lesión renal aguda anúrica. Inicialmente con hallazgo de hidronefrosis izquierda, manejado como nefropatía obstructiva, que eventualmente desarrolla hemorragia alveolar difusa, distrés respiratorio y fallece debido a un síndrome de distrés respiratorio agudo severo refractario asociado a su granulomatosis con poliangitis. La nefropatía obstructiva es una manifestación inusual de las vasculitis ANCA asociadas. Es importante la sospecha diagnóstica en estos cuadros multisistémicos para no dilatar el tratamiento inmunosupresor conjunto con el resto de las terapias requeridas.

Obstructive nephropathy is considered an unusual presentation in ANCA-associated vasculitis. The following case describes a 38-year-old male with granulomatosis with polyangiitis and unilateral hydronephrosis, as well as a literature review. A 38-year-old male with an unremarkable medical background presents with a 3-week history of odynophagia, constitutional symptoms and anuric kidney injury. Initially managed as an obstructive nephropathy due to a left hydronephrosis finding, the patient eventually develops a diffuse alveolar hemorrhage, acute respiratory distress and perishes due to granulomatosis with polyangiitis. Obstructive nephropathy is an unusual manifestation of ANCA-associated vasculitis. Diagnostic suspicion is important in these multisystem pictures so as not to delay immunosuppressive treatment together with the rest of the required therapies.

Linfoma y granulomatosis eosinofílica con poliangeitis (síndrome de Churg-Strauss): reporte de un caso / Lymphoma and eosinophilic granulomatosis with polyangiitis (Churg-Strauss syndrome): case report

Diversas etiologías pueden desencadenar a las vasculitis ANCA (anticuerpos anticitoplasma de neutrófilo). Entre ellas se encuentran las neoplasias hematológicas, como los linfomas no Hodgkin, que pueden asociarse con diferentes autoanticuerpos y manifestaciones reumatológicas. Es esencial sospechar estas causas secundarias si la enfermedad tiene un curso crónico con respuesta tórpida al tratamiento. En el presente artículo se reporta un caso inusual de asociación entre granulomatosis eosinofílica con poliangeitis y linfoma no Hodgkin de bajo grado de agresividad.

Diverse etiologies can trigger ANCA (antineutrophil cytoplasmic antibodies) vasculitis. These include hematological neoplasms, such as non-Hodgkin lymphomas, which can be associated with different autoantibodies and rheumatological manifestations. These secondary causes are essential to suspect if the disease has a chronic course with a poor response to treatment. In this article, we report an unusual association between eosinophilic granulomatosis with polyangiitis and low-grade non-Hodgkin lymphoma.

Histiocitose de células de Langerhans: relato de caso clínico / Langerhans cell histiocytosis: clinical case report

A Histiocitose de células de Langerhans (HCL) é uma doença caracterizada pela proliferação anormal dessas células dentríticas em um tecido, que podem acometer uma única estrutura ou órgão ou ainda ocorrer simultaneamente em mais de uma região. Na cavidade oral geralmente a HCL pode se apresentar como uma hipertrofia gengival e ulceração da mucosa, provocando dor, edema, mobilidade, perda dentária, e destruição do tecido ósseo da maxila e da mandíbula. O objetivo desse trabalho foi de reportar a evolução clínica de um caso de HCL com lesões maxilo-mandibulares em uma paciente adulta. A paciente de 27 anos, feoderma, sexo feminino, foi admitida na Clínica de Estomatologia e Cirurgia Bucomaxilofacial do Hospital Metropolitano Odilon Behrens (HMOB), onde foi diagnosticada com HCL. Houveram cinco manifestações da doença desde 2012 até 2022, sendo todas restritas ao tecido ósseo e se estendendo aos tecidos moles mucogengivais, acometendo duas vezes a mandíbula, duas vezes a maxila, e uma vez na região occiptal do crânio, este último caso tratado pela neurologia. A paciente foi submetida ao tratamento cirúrgico e quimioterápico. O tratamento cirúrgico consistiu na exérese das manifestações da HCL em mandíbula e maxila, sendo que na mandíbula E, foi realizada a ressecção segmentar com margem de segurança após fratura patológica da mandíbula. No momento a paciente encontra-se em acompanhamento pelas clínicas de Cirurgia BMF e Médica Oncológica, realizando novo regime quimioterápico, devido a constantes recidivas. A HCL pode apresentar aspectos clínicos e radiográficos comuns a outras patologias que são encontrados com frequência na clínica odontológica, portanto, é de extrema importância que o cirurgião dentista saiba reconhecer as características clínicas e imaginológicas que possam sugerir o diagnóstico de HCL para melhor conduzir o caso afim de se obter o diagnóstico precoce dessa patologia.

Langerhans cell histiocytosis (LCH) is a disease characterized by the abnormal proliferation of these dendritic cells in a tissue, which can affect a single structure or organ or even occur simultaneously in more than one region. In the oral cavity, LCH can usually present as gingival hypertrophy and mucosal ulceration, causing pain, swelling, mobility, tooth loss, and destruction of bone tissue in the maxilla and mandible. The objective of this work was to report the clinical evolution of a case of LCH with maxillomandibular lesions in an adult patient. The patient of 27 years old, female, feoderm, was admitted to the Clinic of Stomatology and Oral and Maxillofacial Surgery at the Metropolitan Hospital Odilon Behrens (MHOB), where she was diagnosed with LCH. There were five manifestations of the disease from 2012 to 2022, all of which were restricted to bone tissue and extended to mucogingival soft tissues, affecting twice the mandible, twice the maxilla, and once in the occipital region of the skull, the latter case treated by neurology. The patient underwent surgical and chemotherapy treatment. The surgical treatment consisted of the excision of the manifestations of LCH in the mandible and maxilla, and in left mandible, segmental resection was performed after a pathological fracture of the mandible. At the moment, the patient is being followed up by the BMF Surgery and Medical Oncology clinics, undergoing a new chemotherapy regimen, due to constant recurrences. LCH can present clinical and radiographic aspects common to other pathologies that are frequently found in the dental practice, therefore, It is extremely important that the dental surgeon knows how to recognize the clinical and imaging characteristics that may suggest the diagnosis of LCH in order to better manage the case in order to obtain an early diagnosis of this pathology.

Hipoacusia como primera manifestación de granulomatosis con poliangeítis

Introducción: Las vasculitis asociadas a anticuerpos anti citoplasma de neutrófilos (ANCA) son entidades clínicas poco frecuentes con manifestaciones amplias que se asocian a retos diagnósticos. El tratamiento oportuno se asocia a mejoría pronóstica significativa. Caso clínico: Femenina de 45 años que acude con síntomas constitucionales de 2 meses de evolución, asociado en las últimas 2 semanas a hipoacusia progresiva. Se evidencia lesión renal aguda asociada a datos de sedimento urinario activo. El perfil inmune solicitado resultó positivo para ANCA PR-3, y la biopsia renal confirma el diagnóstico de Granulomatosis con Poliangeitis. Se inicia tratamiento inmunosupresor con ciclofosfamida, con poca mejoría de la función renal y requerimiento de hemodiálisis crónica.  La amplia variedad de manifestaciones clínicas asociadas a las vasculitis ANCA conducen a la incapacidad de diagnosticarlas tempranamente y la hipoacusia, aunque descrita, es una manifestación inicial poco frecuente. Conclusión: Las VAA son entidades clínicas poco frecuentes y cuando se presentan con manifestaciones atípicas, suelen ser un reto diagnóstico. Resulta imperativo considerarla en casos de síntomas constitucionales, asociados a manifestaciones renales, otorrinolaringológicas y pulmonares. (provisto por Infomedic International)

Introduction: Anti-neutrophil cytoplasmic antibody (ANCA)-associated vasculitides are rare clinical entities with broad manifestations that are associated with diagnostic challenges. Prompt treatment is associated with significant prognostic improvement. Case report: 45-year-old female presenting with constitutional symptoms of 2 months of evolution, associated in the last 2 weeks with progressive hypoacusis. Acute renal lesion associated with active urinary sediment data was evidenced. The requested immune profile was positive for ANCA PR-3, and the renal biopsy confirmed the diagnosis of Granulomatosis with Polyangiitis. Immunosuppressive treatment with cyclophosphamide was started, with little improvement in renal function and requiring chronic hemodialysis. The wide variety of clinical manifestations associated with ANCA vasculitis lead to the inability to diagnose them early and hypoacusis, although described, is a rare initial manifestation. Conclusion: AAV are rare clinical entities and when they present with atypical manifestations, they are often a diagnostic challenge. It is imperative to consider it in cases of constitutional symptoms, associated with renal, otorhinolaryngologic and pulmonary manifestations. (provided by Infomedic International)

Persistent pain after successful endodontic treatment in a patient with Wegener's granulomatosis: a case report.

Wegener's granulomatosis (WG) is a condition with immune-mediated pathogenesis that can present oral manifestations. This report describes the case of a patient diagnosed with WG 14 years previously, who was affected by persistent pain of non-odontogenic origin after successful endodontic treatment. A 39-year-old woman with WG was diagnosed with pulp necrosis and apical periodontitis of teeth #31, #32, and #41, after evaluation through a clinical examination and cone-beam computed tomography (CBCT). At the first appointment, these teeth were subjected to conventional endodontic treatment. At 6- and 12-month follow-up visits, the patient complained of persistent pain associated with the endodontically treated teeth (mainly in tooth #31), despite complete remission of the periapical lesions shown by radiographic and CBCT exams proving the effectiveness of the endodontic treatments, thus indicating a probable diagnostic of persistent pain of non-odontogenic nature. After the surgical procedure was performed to curette the lesion and section 3 mm of the apical third of tooth #31, the histopathological analysis suggested that the painful condition was likely associated with the patient's systemic condition. Based on clinical, radiographic, and histopathological findings, this unusual case report suggests that WG may be related to non-odontogenic persistent pain after successful endodontic treatments.

Impaired repair properties of endothelial colony-forming cells in patients with granulomatosis with polyangiitis.

In patients with ANCA-associated vasculitis, interactions between neutrophils and endothelial cells cause endothelial damage and imbalance. Endothelial colony-forming cells (ECFCs) represent a cellular population of the endothelial lineage with proliferative capacity and vasoreparative properties. This study aimed to evaluate the angiogenic capacity of ECFCs of patients with granulomatosis with polyangiitis (GPA). The ECFCs of 13 patients with PR3-positive GPA and 14 healthy controls were isolated and characterized using fluorescence-activated cell sorting, capillary tube formation measurement, scratching assays and migration assays with and without plasma stimulation. Furthermore, three patients with active disease underwent post-treatment recollection of ECFCs for longitudinal evaluation. The ECFCs from the patients and controls showed similar capillary structure formation. However, the ECFCs from the patients with inactive GPA exhibited early losses of angiogenic capacity. Impairments in the migration capacities of the ECFCs were also observed in patients with GPA and controls (12th h, p = 0.05). Incubation of ECFCs from patients with GPA in remission with plasma from healthy controls significantly decreased migration capacity (p = 0.0001). Longitudinal analysis revealed that treatment significantly lowered ECFC migration rates. This study revealed that ECFCs from the patients with PR3-positive GPA in remission demonstrated early losses of tube formation and reduced migration capacity compared to those of the healthy controls, suggesting impairment of endothelial function.

Fístula orbitonasal, un desafío terapéutico frente a una manifestación infrecuente en la granulomatosis con poliangitis / Orbito-nasal fistula, a therapeutic challenge against an infrequent manifestation in granulomatosis with polyangiitis

La granulomatosis con poliangitis (GPA) es una condición clínico-patológica que cursa con inflamación granulomatosa del tracto respiratorio superior e inferior, glomerulonefritis necrotizante focal y vasculitis necrotizante de vasos de pequeño y mediano tamaño (capilares, vénulas, arteriolas y arterias). La afectación de la GPA orbitaria oscila entre el 7 y el 45%. En ocasiones, la glándula lagrimal puede estar afectada de forma aislada y ser la manifestación inicial de la enfermedad. Presentamos el caso de una paciente con GPA y fístula nasolagrimal.

Granulomatosis with polyangiitis (GPA) is a clinical-pathological condition that presents with granulomatous inflammation of the upper and lower respiratory tract, focal necrotizing glomerulonephritis and necrotizing vasculitis of small and medium-sized vessels (capillaries, venules, arterioles and arteries). Orbital GPA involvement ranging from 7-45%. The lacrimal gland can occasionally be affected in isolation and be the initial manifestation of the disease. We present the case of a patient with GPA and nasolacrimal fistula.