The best laboratory test to use in the diagnosis of lupus vulgaris in the oral cavity is______________?
Correct answer: C. Biopsy
- A. Bacterial smear
- B. Blood studies
- C. Biopsy
- D. Blood chemistry
Explanation
Lupus vulgaris is a chronic form of cutaneous or mucosal tuberculosis, and biopsy can demonstrate the characteristic granulomatous inflammation and support diagnosis. A bacterial smear or routine blood studies are not sufficiently diagnostic.
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