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Published on: October 18, 2019
Disseminated Mycobacterial Infection as a Sequelae of Bladder Biopsy
Kitson Deane1, Paula Rodriguez1, Dhiviyan Valentine1
1Medicine, Woodhull Medical Center, Brooklyn, USA.
Insights
Disseminated Mycobacterium bovis infection presented uniquely in an immunocompetent patient. Early diagnosis and treatment of this bovine-linked mycobacterial infection improved patient outcomes.
Area of Science:
- Infectious Diseases
- Hepatology
- Microbiology
Background:
- Disseminated Mycobacterium infections typically affect immunocompromised individuals or those treated with Bacillus Calmette-Guerin vaccine for bladder cancer.
- This case highlights a rare presentation of disseminated infection in an immunocompetent host.
Observation:
- A 57-year-old immunocompetent woman presented with cholestatic hepatitis and abdominal pain.
- Initial investigations revealed Mycobacterium bovis in a bladder mass biopsy.
- Despite discontinuation of antituberculosis drugs, symptoms persisted, and liver biopsy confirmed granulomas with acid-fast bacilli.
Findings:
- The patient had prior exposure to bovine livestock, suggesting a potential zoonotic source.
- Standard diagnostic tests like sputum cultures and Quantiferon were negative.
- Initiation of appropriate antibiotics led to significant clinical improvement and normalization of liver function.
Implications:
- Disseminated mycobacterial infections can have varied presentations and sources, including non-tuberculous mycobacteria like Mycobacterium bovis.
- Recognizing potential zoonotic origins and diverse clinical manifestations is crucial for timely diagnosis.
- Prompt and appropriate antibiotic therapy is key to managing disseminated mycobacterial infections and improving patient prognosis.
Abstract:
Disseminated Mycobacterium infections have been commonly documented in the immunocompromised and patients who undergo treatment for non-muscle invasive bladder cancer with the Bacillus Calmette-Guerin vaccine; however, it was unique to our patient's case that she had no record of receiving vaccination in her native country, was immunocompetent, and had exposure to bovine livestock before immigrating to the United States. A 57-year-old woman with no significant medical history presented with complaints of abdominal pains and yellowing of her skin. Laboratory workup was consistent with cholestatic hepatitis. One month prior to presentation, she underwent biopsy and culture of an unspecified bladder mass, which turned out to be positive for Mycobacterium bovis. All antituberculosis medications were discontinued, without improvement of her symptoms and hepatic function tests. Subsequent liver biopsy showed the presence of granulomas with acid-fast bacilli; hence, disseminated infection was highly suspected. Multiple sputum cultures and quantiferon tests were negative, and other diagnostic tests were unremarkable. Initiation of appropriate antibiotics resulted in marked symptomatic improvement and gradual normalization of hepatic function parameters. Disseminated mycobacterial infection may present differently in patients; however, it is important to note that the source of primary infection may vary. Prompt diagnosis and treatment of these pathogens may lead to improved outcomes.
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