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Chronic pulmonary histoplasmosis with an oral lesion
C M Cobb1, R E Shultz, J H Brewer
1School of Dentistry, University of Missouri-Kansas City.
Abstract:
Histoplasmosis is a fungal disease resulting from inhalation of airborne spores of the organism Histoplasma capsulatum. The disease is endemic to the Ohio and Mississippi river valleys. Oral lesions are not common, but when present, they are usually associated with the severe disseminated form of histoplasmosis. This particular case is presented as an example of chronic pulmonary histoplasmosis in which a localized gingival lesion represented the initial clinical manifestation of the disease. Diagnosis was based on a positive biopsy and the results of chest radiographic examination. If, as in this case, serologic, hematologic, and physical examination results are negative, the biopsy of suspicious lesions is of paramount importance to the clinical differential diagnosis.
Insights
Histoplasmosis, a fungal infection, can manifest initially as a localized oral lesion, even in chronic pulmonary cases. Biopsy is crucial for diagnosis when other tests are negative.
Area of Science:
- Mycology
- Infectious Diseases
- Oral Medicine
Background:
- Histoplasmosis is a fungal infection caused by Histoplasma capsulatum spores.
- It is endemic in the Ohio and Mississippi river valleys.
- Oral lesions are rare and typically indicate disseminated disease.
Observation:
- A case of chronic pulmonary histoplasmosis presented with a localized gingival lesion.
- This oral lesion was the initial clinical sign of the disease.
Findings:
- Diagnosis relied on a positive biopsy and chest radiography.
- Serologic, hematologic, and physical exams were negative.
Implications:
- A gingival lesion can be the primary manifestation of chronic pulmonary histoplasmosis.
- Biopsy is essential for differential diagnosis when other tests are inconclusive.