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Free-living fungi as artifacts on hematology preparations
Abstract:
The appearance of Helicosporium sp., a free-living fungus, is reported as a contaminant resembling nematode microfilaria on a Wright's stained blood smear. Also, an unidentified object with structures resembling the septate hyphae of the Fungi Imperfecti and two other forms with some features similar to the fungal genus Fusarium were found on leukocyte alkaline phosphatase preparations of blood smears. The possible incorrect identification of these pseudoparasites is discussed and a review of the pertinent literature included.
Insights
Free-living fungus Helicosporium sp. was mistaken for nematode microfilaria in blood smears. Other fungal forms were also identified, highlighting the potential for misidentifying these pseudoparasites.
Area of Science:
- Medical Mycology
- Parasitology
- Clinical Laboratory Science
Background:
- Accurate identification of bloodborne parasites is crucial for diagnosis and treatment.
- Morphological similarities between fungi and parasites can lead to diagnostic challenges.
Observation:
- Helicosporium sp., a free-living fungus, was observed on a Wright's stained blood smear, mimicking nematode microfilaria.
- Unidentified objects resembling septate hyphae (Fungi Imperfecti) and Fusarium-like structures were noted on leukocyte alkaline phosphatase preparations.
Findings:
- The study reports the presence of fungal contaminants in blood smears that can be mistaken for parasitic organisms.
- Morphological analysis revealed fungal elements with characteristics similar to microfilaria and other fungal genera.
Implications:
- Highlights the importance of differentiating fungal contaminants from actual parasites in hematological diagnostics.
- Emphasizes the need for careful microscopic examination and awareness of potential pseudoparasites in laboratory settings.
- Suggests a review of diagnostic protocols to minimize misidentification of fungal elements as parasites.