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Scedosporium apiospermum Otitis Complicated by a Temporomandibular Arthritis: A Case Report and Mini-Review
1Parasitology-Mycology Laboratory, 45 rue Cognacq-Jay, CHU Maison Blanche, 51100, Reims, France, ahuguenin@chu-reims.fr.
Abstract:
Scedosporium apiospermum is an ubiquitous fungus responsible for various infections in immunocompromised and immunocompetent patients. Ear infections are infrequent. We report an exceptional case of S. apiospermum external otitis complicated by temporomandibular joint arthritis. After 6 months of antibiotherapy, diagnosis was established by mycological analysis of external auditory canal and infratemporal fossae needle sampling. A satisfactory outcome was obtained after 2 months of voriconazole alone. We have reviewed 15 cases of S. apiospermum otitis. Seven of these patients were immunocompromised. Most common clinical presentation included a chronic external otitis lasting months or years before complication stage. Most common clinical features included recurrent unilateral otalgia (11/15) and purulent otorrhea (13/15). Diagnosis was often made at later stage (12/15) with local extension to bones and/or soft tissues (9/15) or cerebral lethal dissemination (3/15).The extremely low incidence of S. apiospermum otomycosis and its non-specific presentation results in a frequent diagnosis delay. A mycological investigation should be performed in case of persistent external otitis and/or osteolysis despite prolonged antibiotic treatment to prevent further extension of the disease.
Insights
Scedosporium apiospermum can cause rare but serious ear infections, even in healthy individuals. Early diagnosis via fungal testing is crucial for effective treatment and to prevent severe complications.
Area of Science:
- Mycology
- Infectious Diseases
- Otolaryngology
Background:
- Scedosporium apiospermum is a fungus causing infections in various patient groups.
- Otitis, particularly external otitis, is an infrequent manifestation of S. apiospermum infection.
Observation:
- This report details an exceptional case of S. apiospermum external otitis complicated by temporomandibular joint arthritis.
- A review of 15 S. apiospermum otitis cases revealed chronic external otitis, recurrent otalgia, and purulent otorrhea as common presentations.
- Diagnosis delays were frequent, often leading to local extension or lethal cerebral dissemination.
Findings:
- Mycological analysis confirmed S. apiospermum in external auditory canal and infratemporal fossae needle samples.
- Voriconazole monotherapy achieved a satisfactory outcome after 2 months in the reported case.
- Most patients (7/15) with S. apiospermum otitis were immunocompromised, but immunocompetent individuals can also be affected.
Implications:
- The non-specific presentation and low incidence of S. apiospermum otomycosis contribute to diagnostic delays.
- Mycological investigation is recommended for persistent external otitis or osteolysis unresponsive to antibiotics.
- Prompt diagnosis and treatment are vital to prevent disease progression and severe outcomes.

