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Yeast Colony Embedding Method

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Published on: March 22, 2011

Prototheca wickerhamii mimicking yeast: a cautionary tale.

B McMullan¹, K Muthiah, D Stark

¹Department of Microbiology, St. Vincent's Hospital, 390 Victoria St., Darlinghurst, NSW 2010, Australia. brendanoch@yahoo.co.uk

Journal of Clinical Microbiology

|June 10, 2011

Summary

Prototheca algae can cause severe infections in immunocompromised individuals, mimicking other illnesses. This case highlights diagnostic challenges in a fatal cardiac transplant recipient infection.

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Area of Science:

Medical Mycology
Infectious Diseases
Transplant Medicine

Background:

Prototheca species are ubiquitous environmental algae.
Algal infections (protothecosis) are rare but can be severe in immunocompromised hosts.
Clinical presentation of protothecosis can be non-specific, mimicking other conditions.

Observation:

A 78-year-old cardiac transplant recipient developed a fatal infection.
The patient's clinical manifestations were atypical and challenging to diagnose.
Diagnostic pitfalls occurred in both clinical assessment and laboratory identification.

Findings:

The case involved a fatal Prototheca species infection.
Misdiagnosis or delayed diagnosis contributed to the adverse outcome.
Specific diagnostic challenges related to Prototheca identification were encountered.

Implications:

Highlights the importance of considering rare pathogens like Prototheca in immunocompromised patients.
Underscores the need for improved diagnostic strategies for algal infections.
Emphasizes the critical role of timely and accurate laboratory identification in managing complex infections.