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Urinary tract infection caused by Mycobacterium terrae complex
1Department of Medicine, Prince of Wales Hospital, Chinese University of Hong Kong, Shatin, Hong Kong.
Summary
Recurrent urinary tract infections caused by Mycobacterium terrae complex, a drug-resistant bacterium, occurred in a patient with obstructive nephropathy. Despite treatment, the patient succumbed to a secondary urinary sepsis from other pathogens.
Area of Science:
- Nephrology
- Infectious Diseases
- Microbiology
Background:
- Obstructive nephropathy presents a significant risk factor for complicated urinary tract infections.
- Recurrent urinary tract infections (UTIs) necessitate thorough etiological investigation, especially in immunocompromised or debilitated patients.
Observation:
- A case of recurrent UTIs is presented in a patient with pre-existing obstructive nephropathy.
- The causative agent was identified as Mycobacterium terrae complex, a non-tuberculous mycobacterium.
- The identified mycobacterium exhibited resistance to multiple first-line antituberculosis drugs.
Findings:
- Despite antimicrobial therapy targeting the Mycobacterium terrae complex, leading to apparent urinary clearance, the patient's condition deteriorated.
- The patient ultimately died due to urinary sepsis, complicated by the presence of multiple bacterial pathogens.
Implications:
- This case highlights the challenges in managing drug-resistant mycobacterial UTIs in patients with underlying renal pathology.
- It underscores the critical importance of considering polymicrobial infections and the potential for secondary bacterial sepsis in complex UTI cases.
- The case emphasizes the need for vigilant monitoring and potentially broader antimicrobial coverage in patients with obstructive nephropathy and persistent or recurrent UTIs.