Two cases of hard metal lung disease showing gradual improvement in pulmonary function after avoiding dust exposure

Table 1 Results from bronchoalveolar lavage fluid (BALF) in Case 1

	Before avoidance of dust exposure	After avoidance of dust exposure
Lavaged area	rt. S⁵	rt. S⁵
Total cell count (/ml)	3.36 × 10⁵	4.04 × 10⁵
Macrophages (%)	43.8	72.6
Lymphocytes (%)	55.0	26.3
Neutrophils (%)	0.6	1.0
Eosinophils (%)	0.0	0.2
CD4/CD8 ratio	0.40	1.72
Multinucleated giant cells	(-)	(-)

ISSN: 1745-6673