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Published on: July 24, 2016
Cryptococcus laurentii fungemia in a premature neonate
M F Cheng1, C C Chiou, Y C Liu
1Department of Pediatrics, Veterans General Hospital-Kaohsiung, Taipei, Taiwan.
Abstract:
Cryptococcus spp. other than Cryptococcus neoformans are generally considered nonpathogenic to humans. There are only 15 case reports of disease in humans caused by Cryptococcus laurentii infection. Underlying diseases and predisposing risk factors seem to play an important role in these cases. Our patient is the first case of an extremely low birth weight infant with C. laurentii fungemia reported in the English literature. In our case, the MIC of amphotericin B for C. laurentii was 0.25 to 1 microg/ml and the patient had a good outcome following the administration of amphotericin B at 10 mg/kg combined with central venous catheter removal. There will undoubtedly be an increasing occurrence of unusual fungal infections accompanying further advances in medicine. A high degree of suspicion and improvements in the techniques for culture and identification will contribute to the earlier diagnosis and treatment of unusual fungal infections.
Insights
Cryptococcus laurentii, typically nonpathogenic, caused fungemia in an extremely low birth weight infant. Early diagnosis and treatment with amphotericin B led to a good outcome, highlighting the need for vigilance in neonatal intensive care units.
Area of Science:
- Medical Mycology
- Neonatal Infectious Diseases
Background:
- Cryptococcus species beyond Cryptococcus neoformans are infrequently pathogenic in humans.
- Only 15 human disease cases caused by Cryptococcus laurentii have been documented.
Observation:
- This report details the first case of Cryptococcus laurentii fungemia in an extremely low birth weight infant.
- The patient's underlying conditions and prematurity likely contributed to the infection.
Findings:
- The minimum inhibitory concentration (MIC) of amphotericin B for C. laurentii was determined to be 0.25 to 1 microg/ml.
- The infant experienced a favorable outcome after treatment with amphotericin B (10 mg/kg) and central venous catheter removal.
Implications:
- Advances in medicine may lead to an increase in rare fungal infections, particularly in vulnerable populations.
- Heightened clinical suspicion and improved diagnostic methods are crucial for early detection and management of unusual fungal infections in neonates.
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