Acute miliary blastomycosis in an AIDS patient

Area of Science:

• Mycology
• Infectious Diseases
• Immunocompromised Host Research

Background:

• Blastomycosis is a fungal infection caused by Blastomyces dermatitidis.
• The incidence of blastomycosis in immunocompromised patients, particularly those with Human Immunodeficiency Virus (HIV) infection, is notably low compared to other fungal infections.
• Disseminated forms of blastomycosis, such as the miliary pattern, are infrequently reported in HIV-infected individuals.

Observation:

• A review of 19 reported cases of blastomycosis in HIV-infected patients revealed that only four exhibited a miliary pattern on chest radiography.
• A specific case of acute miliary blastomycosis is presented in an HIV-infected patient residing in Louisville.
• This presentation signifies a rare occurrence of a severe blastomycosis manifestation in an immunocompromised patient.

Findings:

• The study identifies the rarity of blastomycosis, especially with a miliary presentation, in the context of HIV infection.
• The case report details the clinical and radiological features of acute miliary blastomycosis in an immunocompromised patient.
• This underscores the diagnostic challenges and low incidence rates.

Implications:

• Clinicians should maintain a high index of suspicion for uncommon infections like blastomycosis in HIV patients, even if rare.
• The findings emphasize the importance of considering diverse etiological agents in immunocompromised individuals presenting with respiratory symptoms and specific radiographic patterns.
• Further research may be warranted to understand the specific factors influencing blastomycosis incidence and presentation in the HIV-infected population.