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Orbital tuberculosis diagnosed by immunohistochemistry: case reports
Bráulio F T Oliveira1, Fernanda C Takay, Tatiana M Shida
1Department of Ophthalmology, Hospital das Clínicas de São Paulo, São Paulo, SP, Brazil.
Revista Do Instituto De Medicina Tropical De Sao Paulo
|November 2, 2004
Summary
Orbital tuberculosis is rare but requires high suspicion. Histopathology is crucial for diagnosing this rare ocular manifestation of tuberculosis, especially when systemic evidence is absent.
Area of Science:
- Ophthalmology
- Infectious Diseases
- Pathology
Background:
- Orbital tuberculosis is an uncommon manifestation of Mycobacterium tuberculosis infection.
- Early diagnosis and treatment are essential for favorable outcomes.
Observation:
- Three female patients presented with chronic eyelid swelling.
- No HIV infection was noted, and systemic tuberculosis evidence was negative in all cases.
- Two patients had a history suggestive of tuberculosis exposure.
Findings:
- Standard diagnostic tests for tuberculosis, including Ziehl-Neelsen staining, were negative.
- Histopathological examination with immunohistochemistry was definitive for diagnosing orbital tuberculosis.
- Orbital tuberculosis is a rare ocular condition, with few cases diagnosed annually even in specialized centers.
Implications:
- Ophthalmologists should consider tuberculosis in the differential diagnosis of orbital diseases.
- Awareness of orbital tuberculosis is critical due to the ongoing global public health challenge of M. tuberculosis infections.
- Histopathology plays a vital role in confirming orbital tuberculosis when other diagnostic methods are inconclusive.