Chronic cavitary pneumonia by Rhodococcus equi in a highly prevalent tuberculosis country: a diagnosis challenge

Rhodococcus equi is a facultative aerobic, intracellular, non-motile, non-spore-forming, Gram-positive, weakly acid-fast coccobacillus belonging to the group of nocardioform actinomycetes. R. equi infections are rare opportunistic illnesses in patients with Acquired Immunodeficiency Syndrome (AIDS),...

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Principais autores: Vechi, Hareton Teixeira, Oliveira, Eduardo Teodoro Gurgel de, Freitas, Marise Reis de, Rossi, Flávia, Britto, Maria Helena Marques Fonseca de, Alves, Manoella do Monte
Formato: article
Idioma:English
Publicado em: Universidade de São Paulo
Assuntos:
Rhodococcus equi
AIDS
HIV
Tuberculosis
Necrotizing pneumonia
Endereço do item:https://repositorio.ufrn.br/handle/123456789/31103
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spelling ri-123456789-311032020-12-27T08:10:41Z Chronic cavitary pneumonia by Rhodococcus equi in a highly prevalent tuberculosis country: a diagnosis challenge Vechi, Hareton Teixeira Oliveira, Eduardo Teodoro Gurgel de Freitas, Marise Reis de Rossi, Flávia Britto, Maria Helena Marques Fonseca de Alves, Manoella do Monte Rhodococcus equi AIDS HIV Tuberculosis Necrotizing pneumonia Rhodococcus equi is a facultative aerobic, intracellular, non-motile, non-spore-forming, Gram-positive, weakly acid-fast coccobacillus belonging to the group of nocardioform actinomycetes. R. equi infections are rare opportunistic illnesses in patients with Acquired Immunodeficiency Syndrome (AIDS), associated with a high mortality rate. The most common clinical presentation of R. equi infections is a chronic cavitary pneumonia. Due to its acid-fastness, R. equi can be mistaken for others acid-fast organisms, as Mycobacterium tuberculosis. In turn, R. equi is also a gram-positive pleomorphic bacteria and can be mistaken for diphtheroids or Micrococcus organisms, being accidentally disregarded as oral contaminants in sputum cultures. Therefore, in Brazil, a highly prevalent tuberculosis (TB) country, pulmonary infections caused by R. equi may mimic pulmonary TB and represent a diagnostic challenge. Here, we report on a case of chronic cavitary pneumonia by R. equi in a Human Immunodeficiency Virus (HIV)-infected patient, focusing on diagnostic aspects. 2020-12-22T17:42:53Z 2020-12-22T17:42:53Z 2018-11-14 article VECHI, Hareton Teixeira; OLIVEIRA, Eduardo Teodoro Gurgel de; FREITAS, Marise Reis de; ROSSI, Flávia; BRITTO, Maria Helena Marques Fonseca de; ALVES, Manoella do Monte. Chronic cavitary pneumonia by Rhodococcus equi in a highly prevalent tuberculosis country: a diagnosis challenge. Revista do Instituto de Medicina Tropical de São Paulo, [s. l.], v. 60, p. 1-6, 14 nov. 2018. FapUNIFESP (SciELO). Disponível em: https://www.scielo.br/scielo.php?script=sci_arttext&pid=S0036-46652018005000509&lng=en&tlng=en. Acesso em: 14 out. 2020. http://dx.doi.org/10.1590/s1678-9946201860074. 1678-9946 (online) https://repositorio.ufrn.br/handle/123456789/31103 en Attribution-NonCommercial 3.0 Brazil http://creativecommons.org/licenses/by-nc/3.0/br/ application/pdf Universidade de São Paulo
institution Repositório Institucional
collection RI - UFRN
language English
topic Rhodococcus equi
AIDS
HIV
Tuberculosis
Necrotizing pneumonia
spellingShingle Rhodococcus equi
AIDS
HIV
Tuberculosis
Necrotizing pneumonia
Vechi, Hareton Teixeira
Oliveira, Eduardo Teodoro Gurgel de
Freitas, Marise Reis de
Rossi, Flávia
Britto, Maria Helena Marques Fonseca de
Alves, Manoella do Monte
Chronic cavitary pneumonia by Rhodococcus equi in a highly prevalent tuberculosis country: a diagnosis challenge
description Rhodococcus equi is a facultative aerobic, intracellular, non-motile, non-spore-forming, Gram-positive, weakly acid-fast coccobacillus belonging to the group of nocardioform actinomycetes. R. equi infections are rare opportunistic illnesses in patients with Acquired Immunodeficiency Syndrome (AIDS), associated with a high mortality rate. The most common clinical presentation of R. equi infections is a chronic cavitary pneumonia. Due to its acid-fastness, R. equi can be mistaken for others acid-fast organisms, as Mycobacterium tuberculosis. In turn, R. equi is also a gram-positive pleomorphic bacteria and can be mistaken for diphtheroids or Micrococcus organisms, being accidentally disregarded as oral contaminants in sputum cultures. Therefore, in Brazil, a highly prevalent tuberculosis (TB) country, pulmonary infections caused by R. equi may mimic pulmonary TB and represent a diagnostic challenge. Here, we report on a case of chronic cavitary pneumonia by R. equi in a Human Immunodeficiency Virus (HIV)-infected patient, focusing on diagnostic aspects.
format article
author Vechi, Hareton Teixeira
Oliveira, Eduardo Teodoro Gurgel de
Freitas, Marise Reis de
Rossi, Flávia
Britto, Maria Helena Marques Fonseca de
Alves, Manoella do Monte
author_facet Vechi, Hareton Teixeira
Oliveira, Eduardo Teodoro Gurgel de
Freitas, Marise Reis de
Rossi, Flávia
Britto, Maria Helena Marques Fonseca de
Alves, Manoella do Monte
author_sort Vechi, Hareton Teixeira
title Chronic cavitary pneumonia by Rhodococcus equi in a highly prevalent tuberculosis country: a diagnosis challenge
title_short Chronic cavitary pneumonia by Rhodococcus equi in a highly prevalent tuberculosis country: a diagnosis challenge
title_full Chronic cavitary pneumonia by Rhodococcus equi in a highly prevalent tuberculosis country: a diagnosis challenge
title_fullStr Chronic cavitary pneumonia by Rhodococcus equi in a highly prevalent tuberculosis country: a diagnosis challenge
title_full_unstemmed Chronic cavitary pneumonia by Rhodococcus equi in a highly prevalent tuberculosis country: a diagnosis challenge
title_sort chronic cavitary pneumonia by rhodococcus equi in a highly prevalent tuberculosis country: a diagnosis challenge
publisher Universidade de São Paulo
publishDate 2020
url https://repositorio.ufrn.br/handle/123456789/31103
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AT brittomariahelenamarquesfonsecade chroniccavitarypneumoniabyrhodococcusequiinahighlyprevalenttuberculosiscountryadiagnosischallenge
AT alvesmanoelladomonte chroniccavitarypneumoniabyrhodococcusequiinahighlyprevalenttuberculosiscountryadiagnosischallenge
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