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Published on: January 17, 2018
[An unusual cause of sinusitis]
Ruben Hummelen1, Theo Zeegers, Jan den Hollander
1Maasstad Ziekenhuis, Rotterdam, Afd. Keel-Neus-Oorheelkunde, the Netherlands. rubenhummelen@gmail.com
Nederlands Tijdschrift Voor Geneeskunde
|November 30, 2012
Summary
Fully developed sheep botfly larvae (Oestrus ovis) can mature in humans in rare cases, even in healthy individuals. This case highlights the potential for O. ovis to fully mature after travel to endemic regions.
Area of Science:
- Medical Entomology
- Parasitology
- Human Health
Background:
- The sheep botfly (Oestrus ovis) typically parasitizes sheep and goats.
- Human infections usually involve transient larval survival in nasal passages or under eyelids.
Observation:
- A case report details a 47-year-old woman with symptoms of sneezing, facial swelling, and nasal itching.
- The symptoms were caused by an infestation of three mature O. ovis larvae in her maxillary sinuses.
- Larvae were successfully removed via endoscopic evacuation.
Findings:
- Oestrus ovis larvae can fully mature in a human host, even in immunocompetent individuals.
- This exceptional maturation occurred after the patient visited an endemic area (Cape Verde Islands).
- Previous reports of larval maturation were limited to individuals with compromised mucosal immunity.
Implications:
- This case expands the known host range and clinical presentation of Oestrus ovis infections in humans.
- It underscores the importance of considering parasitic infections in individuals returning from endemic regions.
- Further research may be needed to understand factors facilitating larval maturation in healthy humans.
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