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Published on: July 1, 2020
Invasive fungal infections in children with hematologic and malignant diseases
Sevinc N Ozsevik1, Gulnar Sensoy, Arzu Karli
1Departments of *Pediatrics †Pediatric Infectious Diseases ‡Pediatric Hematology and Oncology, Faculty of Medicine, Ondokuz Mayis University, Samsun, Turkey.
Background:
To evaluate the clinical feature and outcome of invasive fungal infections (IFI) in children with hematologic and malign diseases.
Patients And Methods:
The medical records of children with hematologic and malignant diseases, who were hospitalized at our hospital between January 2010 and December 2011, were reviewed. Proven, probable, and possible IFIs were diagnosed according to the revised definitions of the European Organization for Research and Treatment of Cancer/Mycosis Study Group. The demographic, clinical, and laboratory characteristics of the patients who met the study criteria were evaluated.
Results:
IFI was diagnosed in 67 (7.2%) febrile episodes of 56 patients, of which 10 (1.2%) were proven, 20 (2%) probable, and 37 (4%) possible IFI. Blood culture of 10 cases with proven IFI yielded yeast and the most common isolated agent was Candida parapsilosis. Seventy percent of cases with fungemia had central venous catheter (CVC). Twenty cases with probable IFI had invasive mold infection. The cases with mold infection had higher median C-reactive protein values, lower neutrophil counts, and longer duration of neutropenia compared with the cases with yeast infection. A total of 14 patients (20.9%) died. Presence of CVC, bone marrow transplantation, total parenteral nutrition, prolonged fever, and proven/probable IFI were detected more often in patients who died, compared with patients who survived.
Conclusions:
IFIs are important causes of death in children with hematologic and malignant diseases. Mold infections are seen more frequently in cases with prolonged and profound neutropenia, and invasive yeast infections, especially with non-albicans Candida species, in cases with CVC. Early and effective treatment considering these findings will help to decrease the mortality.
Insights
Invasive fungal infections (IFIs) are a significant cause of mortality in pediatric hematologic and malignancy patients. Early identification of yeast versus mold infections and risk factors like central venous catheters is crucial for timely treatment and improved outcomes.
Area of Science:
- Pediatric Hematology Oncology
- Infectious Diseases
- Clinical Microbiology
Background:
- Invasive fungal infections (IFIs) pose a significant threat to immunocompromised children.
- Hematologic and malignant diseases increase susceptibility to IFIs.
- Understanding IFI clinical features and outcomes in this population is critical.
Purpose of the Study:
- To evaluate the clinical features and outcomes of IFIs in children with hematologic and malignant diseases.
- To identify risk factors associated with IFI development and mortality.
- To differentiate between yeast and mold infections in this patient cohort.
Main Methods:
- Retrospective review of medical records for children diagnosed with IFIs between January 2010 and December 2011.
- Diagnosis of proven, probable, and possible IFIs based on European Organization for Research and Treatment of Cancer/Mycosis Study Group criteria.
- Evaluation of demographic, clinical, and laboratory characteristics of affected patients.
Main Results:
- IFI occurred in 7.2% of febrile episodes across 56 pediatric patients.
- Candida parapsilosis was the most common yeast isolate; 70% of fungemia cases involved central venous catheters (CVCs).
- Mold infections were associated with higher C-reactive protein, lower neutrophils, and prolonged neutropenia compared to yeast infections; 20.9% of patients died, with CVC and bone marrow transplantation being risk factors.
Conclusions:
- IFIs are a major cause of mortality in pediatric hematology-oncology patients.
- Mold infections correlate with prolonged, profound neutropenia; yeast infections, particularly non-albicans Candida, are linked to CVC use.
- Targeted, early treatment strategies informed by these findings can reduce mortality.
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