Peritonitis due to Aspergillus tamarii in peritoneal dialysis patients

Area of Science:

• Medical Mycology
• Infectious Diseases
• Nephrology

Background:

• Aspergillus peritonitis is a rare but severe complication in patients undergoing peritoneal dialysis (PD).
• High mortality and morbidity rates are associated with Aspergillus peritonitis in PD patients.
• Accurate species identification of Aspergillus is critical for appropriate management.

Purpose of the Study:

• To report two cases of Aspergillus tamarii peritonitis in PD patients.
• To highlight the diagnostic challenges posed by conventional culture methods for Aspergillus species.
• To emphasize the utility of molecular techniques in accurate microbial identification.

Main Methods:

• Case report of two PD patients with Aspergillus peritonitis.
• Conventional culture methods for initial identification.
• Nucleotide sequencing of internal transcribed spacer regions of ribosomal DNA for species confirmation.

Main Results:

• Both cases were initially misidentified as Aspergillus flavus by culture.
• Nucleotide sequencing correctly identified the pathogen as Aspergillus tamarii.
• Despite timely intervention, both patients experienced poor outcomes.

Conclusions:

• Accurate species-level diagnosis of Aspergillus is essential in peritonitis.
• Nucleic acid sequencing provides a valuable tool for precise identification of pathogenic microbes.
• Early and correct diagnosis may improve outcomes in Aspergillus peritonitis, though challenges remain.