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[A case of paucibacillary leprosy]
Nobuko Tamura1, Miho Yamamoto, Haruhiko Nishizawa
1Department of Dermatology, Yokohama City University Medical Center, Japan.
Summary
This case study highlights a paucibacillary leprosy diagnosis in a Filipino woman. Diagnosis was confirmed via polymerase chain reaction (PCR) detecting Mycobacterium leprae DNA, despite negative Ziehl-Neelsen staining.
Area of Science:
- Dermatology
- Infectious Diseases
- Microbiology
Background:
- Leprosy, a chronic infectious disease caused by Mycobacterium leprae, primarily affects the skin and peripheral nerves.
- Early diagnosis and treatment are crucial to prevent disability and transmission.
Observation:
- A 31-year-old Filipino female presented with a 5-month history of multiple erythematous skin plaques.
- Histological examination revealed granulomas with lymphocytes, epidermoid cells, and giant cells around nerve and skin appendages.
Findings:
- Standard Ziehl-Neelsen staining of skin biopsy was negative for acid-fast bacilli.
- Polymerase chain reaction (PCR) successfully detected Mycobacterium leprae-specific DNA, confirming a diagnosis of paucibacillary leprosy.
Implications:
- This case underscores the utility of PCR in diagnosing leprosy when traditional methods are inconclusive.
- Highlights the importance of considering leprosy in endemic regions, even with subtle clinical and initial negative microbiological findings.