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Table 2 Percentages of lymphocyte subsets in bronchoalveolar lavage fluid of patients with diffuse lung diseases (DLD)

From: NK and NKT cells in the diagnosis of diffuse lung diseases presenting with a lymphocytic alveolitis

Median percentage (P25-P75)

All patients (n = 202)

Sarcoidosis (n = 106)

Hypersensitivity pneumonitis (n = 53)

Other DLDs

All (n = 43)

Organising pneumonia (n = 10)

Pulmonary involvement in connective tissue diseases (n = 25)

Idiopathic pulmonary fibrosis (n = 8)

T lymphocytes*

92.5 (87.5–95.9)

94.1 (90.0–96.4)

88.1 (83.0–92.9)

93.5 (87.2–96.6)

93.1 (86.0–95.4)

93.7 (88.8–96.7)

93.7 (87.4–96.9)

CD4+ T cells*

69.5 (46.8–82.3)

77.8 (67.5–84.7)

54.0 (36.0–73.8)

51.6 (29.3–71.9)

45.7 (30.7–68.8)

55.0 (38.3–72.1)

37.1 (25.0–80.2)

CD8+ T cells*

24.9 (13.2–48.4)

18.1 (11.9–28.6)

39.1 (21.2–57.8)

46.8 (24.8–65.7)

50.4 (24.9–64.8)

40.8 (24.2–58.3)

56.8 (18.2–72.7)

CD4/CD8 ratio*

2.8 (1.0–6.3)

4.3 (2.4–7.1)

1.4 (0.6–3.5)

1.1 (0.5–2.9)

0.9 (0.5–2.8)

1.4 (0.7–3.0)

0.7 (0.3–5.2)

NK cells*

1.5 (0.8–2.6)

1.3 (0.6–2.1)

2.3 (1.4–6.5)

1.0 (0.5–2.0)

0.9 (0.3–1.3)

1.1 (0.6–2.1)

1.2 (0.7–4.1)

NKT cells

2.9 (1.3–6.4)

2.8 (1.4–5.6)

3.8 (1.7–8.2)

2.7 (1.1–6.4)

2.9 (1.2–8.5)

2.6 (1.0–6.5)

2.2 (0.8–5.3)

B lymphocytes**

0.3 (0.1–0.8)

0.3 (0.1–0.7)

0.6 (0.2–1.1)

0.4 (0.1–1.1)

0.4 (0.2–0.8)

1.0 (0.2–1.6)

0.2 (0.1–0.5)

  1. P percentile
  2. *p < 0.001 for the comparison between sarcoidosis, hypersensitivity pneumonitis, and all other DLDs (Kruskal-Wallis test); p = 0.188 for the comparison between sarcoidosis, hypersensitivity pneumonitis, and all other DLDs (Kruskal-Wallis test); **p = 0.266 for the comparison between sarcoidosis, hypersensitivity pneumonitis, and all other DLDs (Kruskal-Wallis test)