Paracoccidioidomicosis

副锥虫病
  • 文章类型: Journal Article
    背景:肺部真菌在临床和放射学上类似于慢性肺结核。描述患病率的研究,在巴西亚马逊地区,肺真菌病的病因和临床特征至关重要。
    目的:评估涂片阴性肺结核患者肺部真菌病的发生频率;描述他们的人口统计学特征,流行病学,和临床特征;并评估诊断方法。
    方法:在亚马逊地区的两个结核病参考机构进行了一项横断面研究,巴西。我们纳入了213例患者,并收集了临床数据,血液和诱导痰进行血清学,直接显微镜,微生物培养和基于PCR的测定,以鉴定由烟曲霉引起的感染,巴西副球菌,荚膜组织胞浆,隐球菌,和艾滋病毒。还进行了胸部计算机断层扫描。
    结果:在7%(15/213)的病例中诊断出肺部真菌病,包括十例曲霉病病例,副球藻菌病3例,组织胞浆菌病和隐球菌病各1例。在肺部真菌病患者中,86.7%为既往肺结核患者。与肺真菌病相关的最显著的临床特征是腔形肺损伤,长期慢性咳嗽和咯血。
    结论:我们的研究证实了巴西亚马逊河地区涂片阴性肺结核患者中肺部真菌病的高患病率。
    BACKGROUND: Pulmonary mycoses resemble clinically and radiologically chronic pulmonary tuberculosis. Studies describing the prevalence, etiology and clinical features of pulmonary mycosis are of crucial importance in the Brazilian Amazon.
    OBJECTIVE: To estimate the frequency of pulmonary mycoses in smear-negative tuberculosis patients; to describe their demographic, epidemiological, and clinical characteristics; and to evaluate diagnostic methods.
    METHODS: A cross-sectional study was conducted at two tuberculosis reference institutions in Amazonas, Brazil. We included 213 patients and collected clinical data, blood and induced sputum to perform serological, direct microscopy, microbiologic culture and PCR-based assays to identify infections caused by Aspergillus fumigatus, Paracoccidioides brasiliensis, Histoplasma capsulatum, Cryptococcus, and HIV. Chest computed tomography was also performed.
    RESULTS: Pulmonary mycoses were diagnosed in 7% (15/213) of the cases, comprising ten aspergillosis cases, three cases of paracoccidioidomycosis and one case each of histoplasmosis and cryptococcosis. Among the patients with pulmonary mycoses, 86.7% were former tuberculosis patients. The most significant clinical characteristics associated with pulmonary mycoses were cavity-shaped lung injuries, prolonged chronic cough and hemoptysis.
    CONCLUSIONS: Our study confirmed the high prevalence of pulmonary mycoses in smear-negative tuberculosis patients in the Brazilian Amazon.
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  • 文章类型: Case Reports
    BACKGROUND: Paracoccidioidomycosis (PCM) is an endemic disease in Latin America. In immunocompetent hosts, PCM occurs in two main clinical forms: acute and chronic. However, in HIV-infected patients PCM may show up simultaneous manifestations of acute and chronic forms.
    METHODS: We present the case of a patient diagnosed with HIV who had disseminated skin lesions and generalized lymphadenopathy, as well as respiratory and central nervous system involvement. The PCM diagnosis was confirmed by direct KOH examination, double immunodiffusion and the isolation of the fungus in samples of an abscess in the subcostal region. The isolate was identified as Paracoccidioides brasiliensis S1 by species-specific PCR using primers for protein-coding gene GP43 (exon 2) followed by PCR-RFLP of the alpha-tubulin gene.
    CONCLUSIONS: There are few data in literature reporting species-specific molecular identification of Paracoccidioides in HIV/PCM patients. Therefore, this case report may contribute to improve the knowledge about this severe disease, its causative cryptic species, and its consequences to patients.
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  • 文章类型: Journal Article
    BACKGROUND: Paracoccidioidomycosis (PCM) is a systemic mycosis of acute and chronic evolution, caused by species belonging to the genus Paracoccidioides. It is considered the most prevalent systemic endemic mycosis in Latin America, with cases in the tropical and subtropical regions. Residual PCM refers to the fibrotic scar sequelae resulting from the disease treatment which, when associated with collagen accumulation, leads to functional and anatomic alterations in the organs.
    OBJECTIVE: The aim of this study was to evaluate the vocal function of patients with residual PCM in upper airways and digestive tract.
    METHODS: We performed a cross-sectional study in 2010 in a cohort of 21 patients with residual PCM in upper airways and digestive tract.
    RESULTS: The average age was 49.48±9.1 years, and only two (9.5%) patients were female. The study was performed in the 1-113 month-period (median 27) after the end of drug treatment. Five (23.8%) patients had alterations in the larynx as a sequela of the disease. However, all patients had vocal changes in vocal auditory perceptual analysis by GRBASI scale. The computerized acoustic analysis using the software Vox Metria, showed that 11 patients (52.4%) presented alterations in jitter, 15 (71.4%) in shimmer, 8 (38.1%) in F0, 4 (19%) in glottal to noise excitation (GNE), 7 (33.3%) in the presence of noise and 12 (57.1%) in the presence of vibratory irregularity.
    CONCLUSIONS: The great frequency of alterations in residual PCM suggests that the patients in such phase could benefit from a multidisciplinary treatment, offering them integral monitoring of the disease, including speech rehabilitation after the PCM is healed.
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  • 文章类型: Journal Article
    In the second part of this review on the deep mycoses, we describe the main systemic mycoses-paracoccidioidomycosis, coccidioidomycosis, histoplasmosis, mucormycosis, and cryptococcosis-and their cutaneous manifestations. Skin lesions are only occasionally seen in deep systemic mycoses either directly, when the skin is the route of entry for the fungus, or indirectly, when the infection has spread from a deeper focus. These cutaneous signs are often the only clue to the presence of a potentially fatal infection. As with the subcutaneous mycoses, early diagnosis and treatment is important, but in this case, even more so.
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  • 文章类型: Journal Article
    OBJECTIVE: To describe magnetic resonance imaging (MRI) findings in musculoskeletal paracoccidioidomycosis (PCM).
    METHODS: Retrospective case series study after IRB approval. Two musculoskeletal radiologists reviewed in consensus the MRI findings of 11 patients with microbiologically and/or pathologically proven osteoarticular PCM. The MRI evaluation included discrimination of abnormalities in joints, bones and soft tissues.
    RESULTS: Mean age of patients was 29 years (10-55 years), eight men and three women. Musculoskeletal involvement was the only or the primary presentation of the disease in seven patients (63%). Osteomyelitis was the most common presentation, with seven cases (63%). Primary arthritis was found in one patient (9%). Isolated extra-articular soft tissue PCM was found in three patients: myositis (2) and subcutaneous infection (1). All cases showed regions with signal intensity higher than or similar to the signal of muscle on T1-weighted images. Penumbra sign was present in five cases (45%). T2-weighted images showed reactive soft tissue oedema in eight cases (72%). Post-gadolinium images showed peripheral (8/9) or heterogeneous (1/9) enhancement. Synovial enhancement was present in all cases of joint involvement (6/6). Lipomatosis arborescens was documented in one case of chronic knee involvement.
    CONCLUSIONS: To our knowledge, this is the first case series describing MRI findings of musculoskeletal PCM. Musculoskeletal involvement was the primary presentation of the disease in most cases, and therefore, neoplasms were initially in the differential diagnosis. Osteomyelitis was the most common presentation, often with secondary involvement of joint and or soft tissue.
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  • 文章类型: Case Reports
    BACKGROUND: Paracoccidioidomycosis is the most frequent systemic mycosis in Latin America, caused by the dimorphic fungus Paracoccidioides. Paracoccidioidomycosis in children is uncommon. Our aim is to describe clinical features of patients who had a confirmed diagnosis of paracoccidioidomycosis in our hospital in the last 10 years.
    METHODS: We describe 4 cases of paracoccidioidomycosis in previously healthy children from the north of our country. Diagnoses were made by biopsy or culture.
    CONCLUSIONS: The diagnosis of paracoccidioidomycosis should be considered in a patient coming from regions where Paracoccidioides is endemic, and presenting with a lymphoproliferative syndrome, anemia, eosinophilia and hypergammaglobulinemia.
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