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Revista do Instituto de Medicina Tropical de São Paulo

On-line version ISSN 1678-9946

Abstract

COELHO FILHO, João Carlos. Pulmonary cavities colonized by actinomycetes: report of six cases. Rev. Inst. Med. trop. S. Paulo [online]. 1990, vol.32, n.1, pp.63-66. ISSN 1678-9946.  http://dx.doi.org/10.1590/S0036-46651990000100011.

Six cases of a cavitary pulmonary ball formed by Actinomycetes are reported. They were observed in the state of Bahia, Brazil. All patients complained of cough and hemoptysis and the pathological study showed bronchiectasis and small cavities in the lungs. The lesions contained micro-colonies of Actinomyces, identified by morphology, staining properties and culture in two cases (thioglycolate media). In the six patients the disease was limited to the lungs. In one patient grains were found, within micro-abscesses in the surrounding parenchyma. Probably the invasion occurred due to ulceration of bronchial mucosa that was covered by granulation tissue. The author suggests that as in nocardiosis actinomycosys may have an invasive form, a saprophytic one may and colonize pulmonary cavities.

Keywords : Pulmonary cavities; Actinomycetes.

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