Erythema induratum of bazin - Skin lesions with pyrexia of unknown origin undiagnosed for 4 years.

Erythema induratum of Bazin is characterized by chronic, tender, erythematous, indurated subcutaneous nodules on the lower extremities caused by tuberculin hypersensitivity. A 21-year-old woman presented with recurrent episodes of multiple erythematous scaly lesions over both lower limbs below the knee and low-grade fever for 4 years. She was treated from various outside hospitals with multiple courses of antibiotics and nonsteroidal anti-inflammatory drugs without improvement. The histopathology of the skin lesion was suggestive of erythema induratum. She had complete resolution of her skin lesions and fever following 6 months of treatment with antitubercular drugs. A delay in the diagnosis of rare presentations of tuberculosis can result in the administration of ineffective and potentially damaging treatments.

[Erythema induratum of Bazin as a reactivation of latent tuberculosis infection in a patient receiving anti-tumor necrosis factor treatment]. / Eritema indurado de Bazin como una reactivación de una tuberculosis latente en una paciente con tratamiento biológico anti-factor de necrosis tumoral.

Erythema induratum of Bazin is a rare form of cutaneous tuberculosis, considered as part of the spectrum of tuberculids or hipersensitivity reactions to Mycobacterium tuberculosis. Treatment with biologic agents is a known risk factor for tuberculosis reactivation, especially in areas of high incidence like Latin America, which is why screening and treatment protocols must be followed before these therapies are initiated. We present a case of erythema induratum of Bazin as a reactivation of latent tuberculosis infection in a patient with rheumatoid arthritis treated with golimumab.

Eritema indurado de Bazin como una reactivación de una tuberculosis latente en una paciente con tratamiento biológico anti-factor de necrosis tumoral / Erythema induratum of Bazin as a reactivation of latent tuberculosis infection in a patient receiving anti-tumor necrosis factor treatment

Resumen El eritema indurado de Bazin es una tuberculosis cutánea rara, considerada una tuberculide o reacción de hipersensibilidad a Mycobacterium tuberculosis. El tratamiento con agentes biológicos es un factor de riesgo conocido para la reactivación de tuberculosis, especialmente en áreas de alta incidencia como Latinoamérica, por lo que existen protocolos de búsqueda y tratamiento antes del inicio de este tipo de terapias. Se presenta un caso clínico de eritema indurado de Bazin como reactivación de una infección tuberculosa latente en una paciente con artritis reumatoide que recibía tratamiento con golimumab.

Abstract Erythema induratum of Bazin is a rare form of cutaneous tuberculosis, considered as part of the spectrum of tuberculids or hipersensitivity reactions to Mycobacterium tuberculosis. Treatment with biologic agents is a known risk factor for tuberculosis reactivation, especially in areas of high incidence like Latin America, which is why screening and treatment protocols must be followed before these therapies are initiated. We present a case of erythema induratum of Bazin as a reactivation of latent tuberculosis infection in a patient with rheumatoid arthritis treated with golimumab.

Erythema induratum of Bazin as an indicative manifestation of cavitary tuberculosis in an adolescent: a case report.

BACKGROUND: Erythema induratum of Bazin (EIB) is a rare cutaneous manifestation of tuberculosis (TB) that frequently occurs in middle-aged women. The clinical manifestations of EIB can mimic various skin diseases, easily leading to misdiagnosis or underdiagnosis. We report a case of a 16-year-old Chinese girl who initially presented with EIB and was subsequently diagnosed with cavitary TB. CASE PRESENTATION: The patient is a 16-year-old Chinese girl who presented with clusters of erythematous subcutaneous nodules on the posterior part of her right lower leg matching the clinical manifestations of EIB but was otherwise asymptomatic. The patient was subsequently diagnosed with cavitary TB on the basis of a positive result from a T-SPOT.TB test and the observation of cavitary lung lesions in chest computed tomography scanning. A good clinical response was observed in the patient after the initial phase of a standard 6-month antibiotic regimen. CONCLUSIONS: Adolescents infected with Mycobacterium tuberculosis frequently present atypical symptoms. Cutaneous manifestations of tuberculosis in adolescents can be considered good clinical indicators to predict the underlying disease. Strong clinical suspicion is required for a prompt diagnosis in adolescents with EIB.

Erythema induratum of Bazin in a 10-year-old boy.

Erythema induratum of Bazin (EIB) is a form of tuberculid resulting from hypersensitivity to tuberculosis antigen. EIB occurs most commonly in middle-aged women and is not typically seen in children. Here, we present a rare case of EIB, presenting as a chronic nodular panniculitis, in a 10-year-old Korean boy.

A rare cutaneous tuberculosis form, erythema induratum of Bazin: 6 years' experience.

INTRODUCTION: Erythema induratum of Bazin (EIB) is a rare tuberculid form characterized by hypersensitivity to Mycobacterium tuberculosis antigens. There are a few case series related to EIB in the literature. We evaluated the demographic, clinical, treatment, and follow-up characteristics of patients diagnosed with EIB. METHODS: Demographic, clinical, histopathologic, and imaging findings as well as treatment and follow-up properties were evaluated in 22 patients retrospectively diagnosed with EIB between January 2013 and December 2018. RESULTS: Of the 22 patients,90.9% were female and 9.1% were male. The mean age was 57.2 ± 12.9 years. Ten of the patients had a history of contact with tuberculosis, and one had a history of active pulmonary tuberculosis. The purified protein derivate (PPD) test average was 18.1 mm. The lesions were located in the lower extremity in all patients and in the upper extremity in 31.8% of patients. Histopathologically, 22.7% had vasculitis, 27.3% were treated with four tuberculosis drugs, and 72.7% were followed without tuberculosis treatment. Treatment was continued for two patients, and 75.0% of the patients treated with a four-drug regimen recovered. Relapse was observed in one of the patients after 36 months. The recovery rate was found to be 87.5% in patients that did not receive tuberculosis treatment, and there were no relapses in the follow-up. CONCLUSIONS: EIB's etiopathogenesis is unknown. In total, 75.0% of the patients receiving tuberculosis treatment and 87.5% of the patients without tuberculosis treatment recovered in our study. The role of tuberculous therapy in the management of EIB is controversial. The selection of appropriate treatment for EIB continues to be an area of debate, and further studies are needed.

Enfermedad de Crohn metastásica / Metastatic Crohn's disease

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Relato da ocorrência simultânea de escrofuloderma, eritema indurado de Bazin e tuberculide pápulo-necrótica em paciente imunocompetente / Report of simultaneous occurrence of scrofuloderma, Bazin's indurated erythema and papulonecrotic tuberculid on an immunocompetent patient

Modelo do estudo: relato de caso Importância do problema: A tuberculose é um grave problema de saúde no nosso país, no entanto poucos profissionais sabem identificar as formas extrapulmonares da doença, que são responsáveis por 23,3% dos óbitos por tuberculose no Brasil. Das formas extra-pulmonares, apenas 1-2% representam formas cutâneas. É importante que o médico generalista conheça as formas cutâneas de tuberculose, uma vez que pode ser a única manifestação da doença. O seu diagnóstico é um desafio, pois os exames tradicionais têm menor sensibilidade e especificidade para a apresentação cutânea em relação à forma pulmonar. No entanto, novos exames vêm sendo implantados como o GeneXpert. Comentários: Relatamos um caso raro de tuberculose cutânea em paciente imunocompetente, com a manifestação de três formas clínicas simultaneamente ­ escrofuloderma, tubercúlide papulonecrótica e eritema indurado de Bazin. A ocorrência de duas formas simultâneas é descrita na literatura mas a ocorrência de três formas simultâneas é inédita. Essa manifestação atípica foi de difícil diagnóstico clínico por simular outras doenças e os exames tradicionais como o RX de tórax, baciloscopia e cultura não evidenciaram o diagnóstico. A identificação do Mycobacterium tuberculosis só foi possível por meio da pesquisa de PCR com o GeneXpert, que mostrou positividade no escarro pulmonar e no exsudato do escrofuloderma, possibilitando iniciar o tratamento precocemente. Este novo exame de alta sensibilidade e especificidade no diagnóstico da tuberculose pulmonar mostrou-se de grande utilidade no diagnóstico deste caso atípico de tuberculose cutânea onde os exames tradicionais não definiram o diagnóstico. (AU)

Study: Case Report Importance: Tuberculosis is a serious health problem in Brazil. Nevertheless, only few physicians know how to identify the non-pulmonary cases of this disease, which can represent up to 23,3% of deaths caused by tuberculosis in Brazil. Among the non-pulmonary cases, only 1-2% affect the skin. It is important for the general physician to understand the cutaneous presentations of tuberculosis, once it can be the only symptom that the patient presents. Diagnosing cutaneous tuberculosis is a challenge, because traditional laboratory tests have smaller sensitivity and specificity for the cutaneous form in contrast to pulmonary tuberculosis. However, implementation of new exams such as GeneXpert may come in hand. Comments: We report a rare case of cutaneous tuberculosis on an immunocompetent patient, with three different simultaneous presentations - scrofuloderma, papulonecrotic tuberculids and Bazin's indurated erythema. Occurrence of two simultaneous presentations has been reported, however, three simultaneous forms have not. Diagnosing this atypical manifestation was very hard because the clinical presentation often mimics other dermatological conditions, and traditional laboratory testing such as chest X-ray, bacilloscopy and culture did not evidence infection. Identification of Mycobacterium tuberculosis was only possible due to positive PCR testing through GeneXpert on pulmonary and scrofuloderma fluids, allowing rapid treatment initiation. This new high sensitivity and specificity exam proved to be of great value when diagnosing this atypical cutaneous tuberculosis case, in which diagnose was not possible through traditional laboratory testing. (AU)

Mycobacterium tuberculosis found at both skin lesions and Mantoux testing site in a patient with erythema induratum of Bazin.

Mycobacterium tuberculosis is very rarely found in erythema induratum of Bazin; recently, we found an unusual case with positive acid-fast bacilli and polymerase chain reaction for detecting M. tuberculosis in both skin lesions of the extremities and the site of Mantoux test.

Inflammatory leg nodules: A clinical and investigational study.

BACKGROUND: Inflammatory leg nodules are a diagnostically challenging group of dermatoses with limited tools for diagnosis. Considerable overlapping patterns exist despite their distinct clinical and histological features. We attempted to understand if undertaking investigations and studying the clinical course and treatment response can help in differentiating these dermatoses. METHODS: Forty-three patients presenting with inflammatory leg nodules underwent a series of investigations apart from histopathology. The patients were treated as per the final histological diagnosis and observed for response to treatment and followed up to evaluate the clinical course. RESULTS: There was considerable overlap in the investigations done among various dermatoses. These included elevated erythrocyte sedimentation rate (ESR), Mantoux test and antistreptolysin- O (ASLO) titres in the majority of patients while a few had abnormal findings on chest X-ray, CT scan of the chest and doppler ultrasonography of the legs. About 86% of patients with erythema nodosum, 50% with erythema induratum, 57% with cutaneous medium vessel vasculitis and 93% with unclassified panniculitis responded to non-steroidal non-inflammatory drugs (NSAIDs) alone or had spontaneously resolved with only post-inflammatory hyperpigmentation. Other patients required specific treatment with immunosuppressive or immunomodulatory agents. CONCLUSIONS: There is considerable overlap in dermatoses manifesting as inflammatory leg nodules on investigations, treatment received and response to treatment. To categorize them better into distinct entities, this group of dermatoses may require long-term follow-up of the clinical course and response to treatment, repeated investigations especially histopathology during different phases of evolution and progression of disease.

Granuloma fissuratum: entidad desconocida pero fácilmente identificable / Granuloma fissuratum: a little known, but easily identifiable, entity

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