Detection of Propionibacterium acnes and origin of tissue used
| n | Detection of P. acnes in: | ||
| Tissue | Granulomas | ||
| Total patients# | 76 | 31 (41) | 13 (17) |
| Total tissue sections | 80 | 32 (40) | 14 (18) |
| Lung | 32 | 10 (31) | 7 (22) |
| VATS | 7 | 3 (43) | 3 (43) |
| TBLB | 25 | 7 (28) | 4 (16) |
| Lymph node | 25 | 12 (48) | 2 (8) |
| Lymphadenectomy | 14 | 9 (64) | 1 (7) |
| Mediastinoscopy | 5 | 1 (20) | 0 |
| EBUS–TBNA/needle | 6 | 2 (33) | 1 (17) |
| Skin | 17 | 7 (41) | 4 (24) |
| Other | 6 | 3 (50) | 1 (17) |
| Bone marrow | 2 | 2 (100) | 0 |
| Liver | 2 | 1 (50) | 1 (50) |
| Nasal concha | 1 | 0 | 0 |
| Salivary gland | 1 | 0 | 0 |
Data are presented as n (%), unless otherwise stated. #: In 4 out of 76 patients, two tissue sections of different organs were stained namely: lymph node (negative) and lung (P. acnes-positive in tissue and granulomas), liver (negative) and lymph node (P. acnes-positive in tissue), skin (P. acnes-positive in tissue and granulomas) and lung (negative), skin ( P. acnes-positive in tissue and granulomas) and lung (P. acnes-positive in tissue and granulomas). VATS: video-assisted thoracoscopic surgery; TBLB: transbronchial lung biopsy; EBUS–TBNA: endobronchial ultrasound–transbronchial needle aspiration.