A case of autoimmune pulmonary alveolar proteinosis during the course of treatment of rapidly progressive interstitial pneumonia associated with anti-MDA5 antibody-positive dermatomyositis

Table 2 Properties of bronchoalveolar lavage fluid and results of each test

Bronchoalveolar lavage fluid
Recovery rate	58.7 (88/150 mL)	%
Total cells	45,000	/mL
Macrophages	76	%
Lymphocytes	12	%
Neutrophils	12	%
Eosinophils	0	%
Basophils	0	%
CD4/CD8	0.9
General bacterial culture	Negative
Antimicrobial culture	Negative
Candida quantification	< 4 × 10¹	copy/mL
Aspergillus quantification	< 4 × 10¹	copy/mL
Pneumocystis determination	< 4 × 10¹	copy/mL
Cytodiagnosis	no malignancy

In the bronchoalveolar lavage fluid (BALF), antigen quantification testing of this alveolar lavage fluid for infectious agents showed that Pneumocystis, Aspergillus, and Candida were extremely few. Cellular fractionation showed an increased macrophage ratio, with no infectious or malignant findings

ISSN: 1471-2466