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Revista chilena de infectología

versión impresa ISSN 0716-1018


MESSINA, Fernando A. et al. Histoplasmosis in AIDS patients without tegumentary manifestations. Rev. chil. infectol. [online]. 2018, vol.35, n.5, pp.560-565. ISSN 0716-1018.


Histoplasmosis is a mycosis with a high prevalence in HIV/AIDS patients. Clinical presentation includes a wide spectrum of manifestations and diagnosis usually takes up to several weeks in patients who do not present cutaneous lesions.


To determine the clinical and microbiological characteristics as well as some biochemical parameters in patients with AIDS-associated histoplasmosis without tegumentary lesions, in order to develop a guideline which enables an early empiric treatment in cases of difficult diagnosis.


Medical records of 86 patients with histoplasmosis were reviewed; 31 patients with diagnosis of AIDS-associated histoplasmosis without cutaneous lesions were analyzed.


Fever was the most frequent symptom (96.7%), lung involvement was observed in 22 patients (70.9%), the most commonly radiological pattern was miliary pattern [(12/22), 54.5%]. Nineteen patients presented with splenomegaly. Blood culture sensitivity was 93.3% (28/30) and serology was positive only in 23.5% of the cases. Eight patients died (25.8%). Patients in which CD4+ T cell lymphocytes count was < 50 cells/μl, albumin levels < 2.5 g/dl and who presented with pancytopenia had an unfavorable outcome.


In HIV seropositive patients with fever associated to splenomegaly and bilateral miliar pattern in chest radiography, the empiric treatment with amphotericin B must be considered if signs and symptoms of unfavorable outcome are present and due to the time that it takes to arrive at an accurate diagnosis. In order to confirm the diagnosis, all microbiological samples should be collected prior to initiating therapy.

Palabras clave : Histoplasmosis argentina; AIDS; Histoplasma capsulatum; HIV.

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