An elusive diagnosis: Scedosporium apiospermum infection after near-drowning

Malini Gopinath1, Ajith Cherian, Neeraj N Baheti

  • 1Department of Neurology, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Trivandrum, Kerala, India.

Insights

Near-drowning can lead to insidious Scedosporium apiospermum infections of the central nervous system, causing ventriculitis and ring-enhancing lesions. Prompt voriconazole treatment is crucial for survival.

Area of Science:

  • Mycology
  • Infectious Diseases
  • Neurology

Background:

  • Near-drowning incidents can precipitate serious medical complications.
  • Fungal infections of the central nervous system (CNS) pose significant diagnostic and therapeutic challenges.

Observation:

  • A 51-year-old male developed ventriculitis and cerebral ring-enhancing lesions after a near-drowning event.
  • The patient experienced a fatal subarachnoid hemorrhage due to a ruptured mycotic aneurysm.
  • Scedosporium apiospermum was identified in the cerebrospinal fluid.

Findings:

  • Central nervous system invasion by Scedosporium apiospermum can present subtly in near-drowning survivors.
  • Cerebral ring-enhancing lesions and ventriculitis are key indicators of this infection.
  • Early initiation of antifungal therapy, even before definitive culture results, is critical.

Implications:

  • Neurologists and intensivists must maintain a high index of suspicion for Scedosporium apiospermum in near-drowning patients with CNS symptoms.
  • Prompt diagnosis and treatment with voriconazole can be life-saving.
  • This case highlights the potential for rare fungal pathogens to cause severe neurological sequelae.

Related Concept Videos

Fungal Phylum Microsporidia01:28

Fungal Phylum Microsporidia

Microsporidia are a group of obligate intracellular fungi that were initially classified as protists but were later reclassified based on phylogenetic, molecular, and structural evidence linking them to the Chytridiomycota. These unicellular, non-motile organisms are highly specialized parasites that infect a wide range of animal hosts, including humans. They have evolved extensive genomic and metabolic reductions, making them highly dependent on their hosts for survival.Morphology and Genomic...
Rocky Mountain Spotted Fever01:26

Rocky Mountain Spotted Fever

Rocky Mountain Spotted Fever (RMSF) is a severe tick-borne illness caused by Rickettsia rickettsii, a Gram-negative, coccobacillary bacterium. This pathogen is an obligate intracellular parasite, requiring a host cell for replication. Transmission occurs through the bite of an infected tick. In the United States, the most important vectors are Dermacentor variabilis (American dog tick) and Dermacentor andersoni (Rocky Mountain wood tick), though other tick species may also serve as vectors.
Diversity of Protists II01:27

Diversity of Protists II

Alveolates are a group of organisms recognized by the presence of alveoli, which are cytoplasmic sacs located beneath the cell membrane. While their function remains uncertain, alveoli may help regulate water balance by controlling how much water enters and leaves the cell. In dinoflagellates, these structures may serve as armor plates. There are three major types of alveolates: ciliates, which move using cilia; dinoflagellates, which use flagella for movement; and apicomplexans, which are...
Cryptococcal Meningitis01:27

Cryptococcal Meningitis

Cryptococcal meningitis is a life-threatening opportunistic infection predominantly associated with HIV/AIDS, accounting for over 100,000 deaths annually worldwide. However, it also affects individuals with other forms of immunosuppression, including those undergoing immunosuppressive therapy, organ transplant recipients, patients with innate immunodeficiencies, and individuals with hematological disorders. The infection is caused mainly by Cryptococcus neoformans and Cryptococcus gattii,...
Staphylococcal Skin Infections01:29

Staphylococcal Skin Infections

Staphylococcus aureus is a Gram-positive coccus that resides harmlessly on the skin and mucous membranes of healthy individuals. When the skin barrier is breached, it can shift from a commensal to an opportunistic pathogen. This transition is facilitated by surface adhesins, such as clumping factor B and S. aureus surface protein G (SasG), which bind to structural proteins, including loricrin and cytokeratin, in the damaged epidermis. Protein A, another key factor, binds the Fc region of...
Amebiasis01:28

Amebiasis

Entamoeba histolytica, a protozoan parasite, is responsible for intestinal and extraintestinal amebiasis. Though a significant proportion of infections remain asymptomatic, approximately 50 million individuals annually are estimated to present with clinical disease, resulting in up to 100,000 deaths globally. The disease burden is disproportionately high in regions with lower socioeconomic status, such as parts of India, Africa, Mexico, and Latin America.Etiology and TransmissionThe infective...