Brazilian Journal of Pulmonology

ISSN (on-line): 1806-3756 | ISSN (printed): 1806-3713

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Chapter 6 - Paracoccidioidomycosis

Capítulo 6 - Paracoccidioidomicose

Bodo Wanke, Miguel Abidon Aidê

J Bras Pneumol.2009;35(12):-

Abstract PDF PT PDF EN Portuguese Text

Paracoccidioidomycosis is a systemic mycosis caused by the dimorphic fungus Paracoccidioides brasiliensis. The disease is restricted to Latin America. It is the principal systemic mycosis in Brazil, with higher incidences in the southern, southeastern and central regions. The disease is acquired by inhaling fungal propagules. In endemic areas, the primary infection occurs during childhood and involves the immune system. The most common chronic form of paracoccidioidomycosis in adults is the multifocal form, in which there is dissemination to the lungs, lymph nodes, skin and mucosae. This form of the disease has a chronic progression, and the diagnosis is typically delayed. Cough, dyspnea and weight loss due to cutaneous and mucosal lesions are evident and are the principal complaints reported by paracoccidioidomycosis patients. Chest X-rays reveal diffuse reticulonodular infiltrates, which are more evident in the upper lobes. The etiologic diagnosis is based on the identification of P. brasiliensis in clinical specimens, such as lymph node aspirates or BAL fluid, by direct microscopy and culture. Histopathological testing of tissue samples reveals the thick birefringent cell wall of the fungus and the typical pattern of multiple budding around the mother cell. Double agar gel immunodiffusion is useful for the diagnosis when the fungus cannot be detected through mycological tests. Although paracoccidioidomycosis is most often treated with the sulfamethoxazole-trimethoprim combination, itraconazole is preferable. Amphotericin B is used in severe cases.

 


Keywords: Paracoccidioidomycosis; Mycosis; Lung diseases, fungal.

 


Coccidioidomycosis: an unusual cause of acute respiratory distress syndrome

Coccidioidomicose: causa rara de síndrome do desconforto respiratório agudo

Kelson Nobre Veras, Bruno C. de Souza Figueirêdo, Liline Maria Soares Martins, Jayro T. Paiva Vasconcelos, Bodo Wanke

J Bras Pneumol.2003;29(1):45-48

Abstract PDF PT

A male farmer, 20 years old, from the countryside of the State of Piauí, developed acute respiratory infection. Despite adequate antimicrobial therapy, there was worsening respiratory manifestations demanding mechanical ventilation. Radiographs showed diffuse pulmonary infiltrates. PaO2/FiO2 was 58. Direct microscopy and culture from tracheal aspirates disclosed Coccidioides immitis. Autochthonous cases of coccidioidomycosis have only recently been described in Brazil, most of them from the State of Piauí. C. immitis has been isolated from humans, dogs and armadillos (Dasypus novemcinctus), and also from soil samples of armadillo's burrows. Therapeutic failure to antimicrobials and patient's origin from recognized endemic areas should alert for the possibility of acute pulmonary coccidioidomycosis.

 



 

 


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