Value of ultrasound guided biopsy combined with Xpert Mycobacterium tuberculosis/resistance to rifampin assay in the diagnosis of chest wall tuberculosis

Table 1 Diagnostic results of pathology and three detection techniques for chest wall tuberculosis

Detection techniques	Results	Clinical comprehensive diagnosis (n)
		Chest wall tuberculosis	Non chest wall tuberculosis	Total
Pathology	Positive	18	0	18
	Negative	4	9	13
	Total	22	9	31
Acid-fast stain	Positive	6	0	6
	Negative	16	9	25
	Total	22	9	31
Mycobacterial culture	Positive	3	0	3
	Negative	19	9	28
	Total	22	9	31
Xpert MTB/RIF	Positive	21	1	22
	Negative	1	8	9
	Total	22	9	31
Pathology and acid-fast stain	Positive	18	0	18
	Negative	4	9	13
	Total	22	9	31
Pathology and mycobacterial culture	Positive	18	0	18
	Negative	4	9	13
	Total	22	9	31
Pathology and Xpert MTB/RIF	Positive	22	1	23
	Negative	0	8	8
	Total	22	9	31

MTB/RIF: Mycobacterium tuberculosis/resistance to rifampin.