Cutaneous infection due to Scedosporium apiospermum in an immunosuppressed patient

M A Chaveiro1, R Vieira, J Cardoso

  • 1Department of Dermatology, Curry Cabral Hospital, Rua da Beneficiencia, no 8, 1069-166 Lisbon, Portugal.

Insights

Scedosporium apiospermum, a fungus causing infections in immunocompromised individuals, rarely presents as a skin infection. This case highlights successful treatment of a cutaneous Scedosporium apiospermum infection with itraconazole.

Area of Science:

  • Mycology
  • Dermatology
  • Infectious Diseases

Background:

  • Scedosporium apiospermum, the asexual form of Pseudallescheria boydii, is a fungus with low virulence, but infections are increasing in immunosuppressed populations.
  • Cutaneous and subcutaneous infections are uncommon, with mycetoma being the most frequent presentation.

Observation:

  • A case of cutaneous infection caused by Scedosporium apiospermum is presented in a patient with rheumatoid arthritis and diabetes mellitus.
  • The patient was on long-term immunosuppressive therapy with cyclosporine and corticosteroids.
  • Histopathology of skin biopsy revealed granulomatous infiltrate with hyaline septate hyphae.

Findings:

  • Scedosporium apiospermum was isolated from two skin biopsies taken three weeks apart.
  • The patient was treated with itraconazole at a dosage of 400 mg/day for three months.
  • The itraconazole therapy was effective in resolving the cutaneous infection.

Implications:

  • This case underscores the importance of considering Scedosporium apiospermum in the differential diagnosis of cutaneous infections in immunocompromised patients.
  • It highlights the efficacy of itraconazole in treating cutaneous Scedosporium apiospermum infections.
  • Further research into the management of Scedosporium apiospermum infections in specific patient populations is warranted.

Related Concept Videos

Skin Diseases and Disorders01:23

Skin Diseases and Disorders

Skin is the first line of defense and encounters a variety of microbes. Some pathogenic strains are often the cause of a broad range of infections of the skin and other body systems. These conditions can affect people of all ages and may have different causes, including genetic factors, infections, autoimmune reactions, environmental factors, and lifestyle choices.
Gram-positive Staphylococcus spp. and Streptococcus spp. are responsible for many of the most common skin infections. However, many...
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...
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...
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,...
Clinical Applications of Epidermal Stem Cells01:19

Clinical Applications of Epidermal Stem Cells

Epidermal stem cells (EpiSCs) are mainly located at the basal layer of the epidermis. These cells repair minor injuries of the skin and replace dead skin cells. However, EpiSCs’ cannot heal severe wounds such as major burns or those from diabetes or hereditary disorders. In such cases, culturing the epidermal stem cells from the patient is possible and has yielded successful treatment options, such as laboratory-grown skin grafts. These grafts are synthesized using a patient’s own EpiSCs...
Pulmonary Tuberculosis I01:29

Pulmonary Tuberculosis I

Tuberculosis, often called TB, is a contagious illness primarily caused by Mycobacterium tuberculosis. It mainly affects the lung parenchyma but can also impact other body parts.
Causative Organism
The primary infectious agent causing tuberculosis is Mycobacterium tuberculosis, a slow-growing, acid-fast, aerobic rod that exhibits sensitivity to heat and ultraviolet light. Instances of Mycobacterium bovis and Mycobacterium avium contributing to the development of TB infection are rare.
Mode of...