Cutaneous Tuberculosis: Clinicopathologic Arrays and Diagnostic Challenges

Table 4

Sensitivity and specificity of PCR in the diagnosis of cutaneous tuberculosis (literature review).

References and date	No. of samples	Sensitivity (%)	Specificity (%)
(Lee et al. 2016)	574	51.1	86.3
(Tan et al. 2001)	105	100	100 (multi-bacillary form)
		Overall 73 (positivity of 55% in cases of tuberculosis verrucosa and 60% in cases of lupus vulgaris; positivity of 54% for cases of erythema induratum)	not calculated (pauci-bacillary form)
(Chawla et al. 2009)	104	74.1	96.1
(Agarwal et al. 2017)	70	24.5	not calculated
(Salian et al. 1998)	60 (formalin fixed paraffin embedded)	73.6	100
(Ogusku et al. 2003)	37	43.7	90.4
(Negi et al. 2005)	37	95.2	100
(Abdalla et al. 2009)	34	88	83
(Hsiao et al. 2003)	34	56	not calculated
(Lall et al. 2017)	31	25.8	not calculated
(Khosravi et al. 2006)	30 (formaline fixed)	75	not calculated
(Ramam et al. 2013)	28	25	73.7
(Khine et al. 2017)	25	52	not calculated
(Quiros et al. 1996)	20	85	not calculated