Head & Neck Oncology

Table 4 Results of brush biopsy and scalpel biopsy

From: The efficacy of oral brush biopsy with computer-assisted analysis in identifying precancerous and cancerous lesions

N = 79	Scalpel Biopsy Malignant or Dysplastic	Scalpel Biopsy Benign	Total
Brush Biopsy Positive	1	0	1
Brush Biopsy Atypical	25	5	30
Brush Biopsy Negative	1	47	48
Total	27	52	79

Sensitivity of brush biopsy: 96.3%; 95% CI, 87%-100%).
Specificity of "positive" brush biopsy result: 100%; 95% CI, 93%-100%
Specificity for "atypical" brush biopsy result: 90.4%; 95% CI, 82%-97%
Positive predictive value of an abnormal brush biopsy: 84%
Negative predictive value of an abnormal brush biopsy value: 98%.

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