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Updated: Jun 26, 2026

Microbiological Rapid On-Site Evaluation for Pulmonary Infectious Diseases
Published on: March 1, 2024
Pulmonary cryptococcosis in non-AIDS patients
Benquan Wu1, Hui Liu, Jing Huang
1Department of Internal Medicine, Division of Pulmonary and Critical Care, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China. zswbq@163.com
Purpose:
To clarify the clinical features and imaging characteristics of non-AIDS patients with pulmonary cryptococcosis.
Methods:
We retrospectively collected 15 HIV-negative patients with pathology-proved pulmonary cryptococcosis from Sep 1992 to Jan 2008. Their medical records and radiological data were reviewed and analyzed.
Results:
Only one patient was asymptomatic.Thirteen patients were immunocompetent and two were immunosuppressed. Three patients had associated cryptococcosis meningitis. The most common radiographic abnormalities were multiple pulmonary nodules or masses, seen in 8 and 5 cases of patients respectively. 14 patients received specific therapy for Cryptococcus neoformans. Two patients died. In the 11 patients with isolated pulmonary cryptococcosis, treatment consisted of fluconazole alone (n=7), in combination with amphotericin B (n=2), and both 5-flucytosine and amphotericin B (n=2). For the other 2 patients with cryptococcosis meningitis, one was treated with amphotericin B alone and the other with fluconazole combined with amphotericin B and 5-flucytosine.
Conclusions:
Non-AIDS patients might also susceptible to cryptococcosis infection. Histological examination is the principal method of diagnosis. The most common CT findings are solitary or multiple nodules with or without cavitation in the subpleural areas of the lung.
Insights
Pulmonary cryptococcosis can affect non-AIDS patients, presenting as lung nodules on CT scans. Diagnosis relies on histology, and treatment varies based on disease severity and complications.
Area of Science:
- Infectious Diseases
- Pulmonology
- Radiology
Background:
- Pulmonary cryptococcosis is often associated with immunocompromised individuals, particularly those with AIDS.
- Non-AIDS patients can also develop pulmonary cryptococcosis, necessitating a broader understanding of its clinical spectrum.
Purpose of the Study:
- To delineate the clinical manifestations and imaging findings of pulmonary cryptococcosis in patients without acquired immunodeficiency syndrome (AIDS).
Main Methods:
- Retrospective analysis of 15 HIV-negative patients diagnosed with pulmonary cryptococcosis between 1992 and 2008.
- Review of medical records and radiological data, including CT scans, for clinical and imaging characteristics.
Main Results:
- Most patients (13/15) were immunocompetent; only one was asymptomatic.
- Common findings included multiple pulmonary nodules or masses (8 and 5 cases, respectively).
- Two patients died; treatment involved antifungal agents like fluconazole and amphotericin B.
Conclusions:
- Pulmonary cryptococcosis is a potential infection in non-AIDS patients.
- Histological examination is crucial for definitive diagnosis.
- CT scans frequently reveal solitary or multiple nodules, sometimes with cavitation, often in subpleural locations.
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