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[Dirofilariasis, an unknown parasitosis. One case observed in Paris (author's transl)]
Abstract:
In France, dirofilariasis D. tenuis are rare (less than ten cases were recorded). They manifest themselves by subcutaneous nodules. The fact that sometimes important inflammatory signs exist, could being one to diagnose an infectious etiology. Diagnosis may be made when the nodule is in the periorbital region if the patient comes back from endemic area and specially if he noted a migration of the parasite. It is hardly possible to count on the laboratory exams and it is the biopsy that will prove the existence of the parasite and will assure the cure.
Insights
Dirofilariasis caused by Dirofilaria tenuis is rare in France, presenting as subcutaneous nodules. Diagnosis often relies on clinical presentation and biopsy, especially in returning travelers with periorbital nodules.
Area of Science:
- Medical Parasitology
- Dermatology
- Infectious Diseases
Background:
- Dirofilariasis, caused by Dirofilaria species, is a parasitic zoonosis.
- Dirofilaria tenuis infections are infrequently reported in France, with fewer than ten cases documented.
Observation:
- Dirofilaria tenuis infections typically manifest as subcutaneous nodules.
- Significant inflammatory signs may mimic infectious etiologies, complicating diagnosis.
- Periorbital nodules in patients returning from endemic areas, particularly with noted parasite migration, raise suspicion.
Findings:
- Laboratory examinations are often inconclusive for diagnosing dirofilariasis.
- Biopsy is crucial for confirming the presence of Dirofilaria parasites.
- Biopsy also serves to confirm successful treatment and eradication.
Implications:
- Increased awareness is needed for rare parasitic infections like dirofilariasis in non-endemic regions.
- Clinical suspicion, travel history, and characteristic symptoms are key diagnostic clues.
- Biopsy remains the gold standard for diagnosis and confirming cure in subcutaneous dirofilariasis.