HP	Hypersensitivity Pneumonitis
HRCT	High-Resolution Computed Tomography
ILD	Interstitial Lung Disease
IPF	Idiopathic Pulmonary Fibrosis
PFT	Pulmonary Function Test
FVC	Forced Vital Capacity
DLCO	Diffusing Capacity of the Lung for Carbon Monoxide
BAL	Bronchoalveolar Lavage
EKG	Electrocardiogram
ANA	Anti-Nuclear-Antigen antibody panel
IgG	Immunoglobulin G
FEV	Forced Expiratory Volume
TLC	Total Lung Capacity
RV	Residual Volume
IgE	Immunoglobulin E
COPD	Chronic Obstructive Pulmonary Disease
ERV	Expiratory Reserve Volume
RB-ILD	Respiratory Bronchiolitis-Associated Interstitial Lung Disease
PaO2	Partial Pressure of Oxygen
HE	Hematoxylin and Eosin
PaCO2	Partial Pressure of Carbon Dioxide
PPF	Progressive Pulmonary Fibrosis
ABG	Arterial Blood Gas
MDD	Multidisciplinary discussion
ATS	American Thoracic Society
JRS	Japanese Respiratory Society
ALAT	Latin American Thoracic Association
Anti-nRNP/Sm	Anti-nuclear Ribonucleoprotein/Smith antibodies
Anti-Sm	Anti-Smith antibodies
Anti-SS-A (Ro)	Anti-SS-A (Ro) antibodies
Anti-Ro-52	Anti-Ro-52 antibodies
Anti-SS-B (La)	Anti-SS-B (La) antibodies
Anti-Scl-70	Anti-topoisomerase I (Scl-70) antibodies
Anti-PM-Scl 100	Anti-PM-Scl 100 antibodies
Anti-Jo-1	Anti-histidyl-tRNA synthetase (Jo-1) antibodies
Anti-Centromere B	Anti-centromere B antibodies
Anti-PCNA	Anti-proliferating cell nuclear antigen (PCNA) antibodies
Anti-dsDNA	Anti-double-stranded DNA antibodies
Anti-Nucleosome	Anti-nucleosome antibodies
Anti-Histone	Anti-histone antibodies
Anti-Ribosomal P Protein	Anti-ribosomal P protein antibodies
Anti-AMA-M2	Anti-mitochondrial antibodies type M2
Anti-DFS70	Anti-dense fine speckled 70 antibodies
DIP	Desquamative Interstitial Pneumonia
SaO2	Arterial Oxygen Saturation
HCO3−	Bicarbonate
MEF25	Maximal Expiratory Flow at 25% of Forced Vital Capacity