V.e V - Pleural and/or pericardial involvement
V.e - Hemothorax - Serosanguineous pleural effusion V.f V - Pleural and/or pericardial involvement
V.f - Pneumothorax V.h V - Pleural and/or pericardial involvement
V.h - Chylothorax V.n V - Pleural and/or pericardial involvement
V.n - Hemopericardium - Bloody pericardial effusion V.y V - Pleural and/or pericardial involvement
V.y - Bilateral tension pneumothorax (can be fatal) V.ab V - Pleural and/or pericardial involvement
V.ab - Pneumothorax, bilateral VI.r VI - Pulmonary vasculopathies
VI.r - Septic pulmonary embolism XII.c XII - Cardiovascular involvement / toxicity
XII.c - Pericardial effusion (w/wo tamponade) XII.y XII - Cardiovascular involvement / toxicity
XII.y - Pneumopericardium XII.ae XII - Cardiovascular involvement / toxicity
XII.ae - Aortic dissection XII.am XII - Cardiovascular involvement / toxicity
XII.am - Cardiac injury/trauma XII.at XII - Cardiovascular involvement / toxicity
XII.at - Aortitis XII.av XII - Cardiovascular involvement / toxicity
XII.av - Infectious aortitis XII.be XII - Cardiovascular involvement / toxicity
XII.be - Septic/purulent pericardial effusion

I.b I - Interstitial/parenchymal lung disease
I.b - Pneumonitis (ILD) I.d I - Interstitial/parenchymal lung disease
I.d - Organizing pneumonia pattern (an area or areas of consolidation on imaging) I.n I - Interstitial/parenchymal lung disease
I.n - Pulmonary alveolar proteinosis (PAP) I.y I - Interstitial/parenchymal lung disease
I.y - Progression, acceleration or exacerbation of preexisting ILD/fibrosis V.a V - Pleural and/or pericardial involvement
V.a - Pleural effusion (uni- or bilateral) (can accompany DI-LDs) V.c V - Pleural and/or pericardial involvement
V.c - Pleural thickening V.d V - Pleural and/or pericardial involvement
V.d - Pleural/pericardial effusion, ANA positive (DI lupus) V.h V - Pleural and/or pericardial involvement
V.h - Chylothorax V.i V - Pleural and/or pericardial involvement
V.i - Pleuritis (can cause chest pain) V.m V - Pleural and/or pericardial involvement
V.m - Pleuropericarditis - Pleuropericardial effusion (ANA unknown or negative) VI.b VI - Pulmonary vasculopathies
VI.b - Pulmonary arterial hypertension X.d X - Systemic/Distant conditions, syndromes and reactions
X.d - Lupus - Lupus syndrome (see also Vd) X.r X - Systemic/Distant conditions, syndromes and reactions
X.r - Fluid retention XI.b XI - Miscellaneous
XI.b - Chest pain (acute or subacute), lone or prominent XII.c XII - Cardiovascular involvement / toxicity
XII.c - Pericardial effusion (w/wo tamponade) XV.c XV - Pathology
XV.c - Path: Organizing pneumonia (OP/BOOP) pattern (see also Id) XV.n XV - Pathology
XV.n - Path: Pulmonary alveolar proteinosis pattern (PAP pattern) XV.ao XV - Pathology
XV.ao - Path: Pleuritis, pleural fibrosis XV.ch XV - Pathology
XV.ch - Path: Organizing fibrinous pleuritis (OFP) XVI.m XVI - Imaging
XVI.m - Imaging: Interlobular septal thickening XVI.an XVI - Imaging
XVI.an - Imaging: Pleural effusion XIX.a XIX - Cytological, biochemical features of/in BAL, pleural fluid or FNA
XIX.a - BAL: An excess proportion of lymphocytes

V.a V - Pleural and/or pericardial involvement
V.a - Pleural effusion (uni- or bilateral) (can accompany DI-LDs) V.c V - Pleural and/or pericardial involvement
V.c - Pleural thickening V.h V - Pleural and/or pericardial involvement
V.h - Chylothorax V.o V - Pleural and/or pericardial involvement
V.o - The 'folded lung' (Blesovsky syndrome) XII.b XII - Cardiovascular involvement / toxicity
XII.b - Valvular heart disease and/or dysfunction XII.k XII - Cardiovascular involvement / toxicity
XII.k - Constrictive pericarditis - Pericardial thickening XVI.an XVI - Imaging
XVI.an - Imaging: Pleural effusion XVI.ap XVI - Imaging
XVI.ap - Imaging: Pleural thickening w/wo rounded atelectasis

I.b I - Interstitial/parenchymal lung disease
I.b - Pneumonitis (ILD) I.d I - Interstitial/parenchymal lung disease
I.d - Organizing pneumonia pattern (an area or areas of consolidation on imaging) I.ak I - Interstitial/parenchymal lung disease
I.ak - Pleuropneumonitis IV.a IV - Airway involvement
IV.a - Bronchospasm - Wheezing - Asthma V.a V - Pleural and/or pericardial involvement
V.a - Pleural effusion (uni- or bilateral) (can accompany DI-LDs) V.c V - Pleural and/or pericardial involvement
V.c - Pleural thickening V.h V - Pleural and/or pericardial involvement
V.h - Chylothorax V.m V - Pleural and/or pericardial involvement
V.m - Pleuropericarditis - Pleuropericardial effusion (ANA unknown or negative) V.o V - Pleural and/or pericardial involvement
V.o - The 'folded lung' (Blesovsky syndrome) VII.d VII - Mediastinal involvement
VII.d - Fibrosing mediastinitis XI.u XI - Miscellaneous
XI.u - Chest pressure/discomfort XI.aq XI - Miscellaneous
XI.aq - Retroperitoneal fibrosis XII.a XII - Cardiovascular involvement / toxicity
XII.a - Left or biventricular dysfunction/failure XII.b XII - Cardiovascular involvement / toxicity
XII.b - Valvular heart disease and/or dysfunction XII.c XII - Cardiovascular involvement / toxicity
XII.c - Pericardial effusion (w/wo tamponade) XII.g XII - Cardiovascular involvement / toxicity
XII.g - Coronary artery disease (acute) - Myocardial ischemia/infarction XV.ao XV - Pathology
XV.ao - Path: Pleuritis, pleural fibrosis XVI.an XVI - Imaging
XVI.an - Imaging: Pleural effusion XVI.ap XVI - Imaging
XVI.ap - Imaging: Pleural thickening w/wo rounded atelectasis

I.a I - Interstitial/parenchymal lung disease
I.a - Pneumonitis (ILD), acute and/or severe (may cause ARDS) I.b I - Interstitial/parenchymal lung disease
I.b - Pneumonitis (ILD) I.d I - Interstitial/parenchymal lung disease
I.d - Organizing pneumonia pattern (an area or areas of consolidation on imaging) I.f I - Interstitial/parenchymal lung disease
I.f - Acute fibrinous organizing pneumonia (AFOP) I.h I - Interstitial/parenchymal lung disease
I.h - Subclinical pulmonary infiltrates/ILD I.l I - Interstitial/parenchymal lung disease
I.l - Diffuse alveolar damage (DAD) (see alsoo under IIb and XVf) I.m I - Interstitial/parenchymal lung disease
I.m - ILD with a granulomatous component I.p I - Interstitial/parenchymal lung disease
I.p - Fatal pneumonitis (ILD) I.v I - Interstitial/parenchymal lung disease
I.v - Abnormal lung function/pulmonary physiology (PFTs) without necessarily imaging or clinical evidence I.y I - Interstitial/parenchymal lung disease
I.y - Progression, acceleration or exacerbation of preexisting ILD/fibrosis I.ad I - Interstitial/parenchymal lung disease
I.ad - Radiation recall pneumonitis II.b II - Pulmonary edema - Acute lung injury - ARDS
II.b - ARDS - Acute lung injury III.a III - Pulmonary/alveolar./airway hemorrhage/bleeding
III.a - Alveolar hemorrhage (AH), diffuse AH (DAH) III.h III - Pulmonary/alveolar./airway hemorrhage/bleeding
III.h - Major/massive hemoptysis IV.d IV - Airway involvement
IV.d - Cough (lone) V.h V - Pleural and/or pericardial involvement
V.h - Chylothorax V.i V - Pleural and/or pericardial involvement
V.i - Pleuritis (can cause chest pain) VI.a VI - Pulmonary vasculopathies
VI.a - Pulmonary embolism - Venous thrombosis/thromboembolism VIII.a VIII - Central-large-upper airway (incl. pharyngeal-nasal) involvement
VIII.a - Angioedema (may cause UAO, asphyxia and death) XV.a XV - Pathology
XV.a - Path: NSIP-cellular pattern (see also Ia, Ib) XV.c XV - Pathology
XV.c - Path: Organizing pneumonia (OP/BOOP) pattern (see also Id) XV.d XV - Pathology
XV.d - Path: Acute fibrinous organizing pneumonia (AFOP-pattern) (see also If) XV.e XV - Pathology
XV.e - Path: ILD with a granulomatous component (see also Im) XV.g XV - Pathology
XV.g - Path: Alveolar hemorrhage (see also IIIa) XVI.b XVI - Imaging
XVI.b - Imaging: Ground-glass opacities (GGO) / shadowing XVI.bl XVI - Imaging
XVI.bl - Imaging: An area or areas of avid tracer uptake in the lung/chest on 18F-PET scan XVII.e XVII - Infections & related conditions
XVII.e - Pneumocystis jiroveci pneumonia

I.a I - Interstitial/parenchymal lung disease
I.a - Pneumonitis (ILD), acute and/or severe (may cause ARDS) I.b I - Interstitial/parenchymal lung disease
I.b - Pneumonitis (ILD) I.c I - Interstitial/parenchymal lung disease
I.c - Eosinophilic pneumonia (pulmonary infiltrates and eosinophilia) I.d I - Interstitial/parenchymal lung disease
I.d - Organizing pneumonia pattern (an area or areas of consolidation on imaging) I.v I - Interstitial/parenchymal lung disease
I.v - Abnormal lung function/pulmonary physiology (PFTs) without necessarily imaging or clinical evidence I.y I - Interstitial/parenchymal lung disease
I.y - Progression, acceleration or exacerbation of preexisting ILD/fibrosis I.ab I - Interstitial/parenchymal lung disease
I.ab - Radiation-induced lung injury (RILI) I.ac I - Interstitial/parenchymal lung disease
I.ac - Acute radiation pneumonitis II.b II - Pulmonary edema - Acute lung injury - ARDS
II.b - ARDS - Acute lung injury V.a V - Pleural and/or pericardial involvement
V.a - Pleural effusion (uni- or bilateral) (can accompany DI-LDs) V.h V - Pleural and/or pericardial involvement
V.h - Chylothorax VIII.c VIII - Central-large-upper airway (incl. pharyngeal-nasal) involvement
VIII.c - Upper airway obstruction other than angioedema or hematoma IX.h IX - Neuromuscular / CNS involvement - Disordered breathing during sleep
IX.h - Dyspnea, unexplained otherwise XII.k XII - Cardiovascular involvement / toxicity
XII.k - Constrictive pericarditis - Pericardial thickening XV.a XV - Pathology
XV.a - Path: NSIP-cellular pattern (see also Ia, Ib) XV.b XV - Pathology
XV.b - Path: Eosinophilic pneumonia (subacute or acute) (see also Ic) XV.c XV - Pathology
XV.c - Path: Organizing pneumonia (OP/BOOP) pattern (see also Id) XV.d XV - Pathology
XV.d - Path: Acute fibrinous organizing pneumonia (AFOP-pattern) (see also If) XV.f XV - Pathology
XV.f - Path: Diffuse alveolar damage (DAD-pattern) (see also IL) XV.h XV - Pathology
XV.h - Path: NSIP-fibrotic pattern XVI.bl XVI - Imaging
XVI.bl - Imaging: An area or areas of avid tracer uptake in the lung/chest on 18F-PET scan XIX.a XIX - Cytological, biochemical features of/in BAL, pleural fluid or FNA
XIX.a - BAL: An excess proportion of lymphocytes XIX.c XIX - Cytological, biochemical features of/in BAL, pleural fluid or FNA
XIX.c - BAL: An excess proportion of eosinophils

I.c I - Interstitial/parenchymal lung disease
I.c - Eosinophilic pneumonia (pulmonary infiltrates and eosinophilia) I.d I - Interstitial/parenchymal lung disease
I.d - Organizing pneumonia pattern (an area or areas of consolidation on imaging) I.g I - Interstitial/parenchymal lung disease
I.g - Pulmonary fibrosis I.h I - Interstitial/parenchymal lung disease
I.h - Subclinical pulmonary infiltrates/ILD I.o I - Interstitial/parenchymal lung disease
I.o - Focal/localized area of pneumonitis/fibrosis I.v I - Interstitial/parenchymal lung disease
I.v - Abnormal lung function/pulmonary physiology (PFTs) without necessarily imaging or clinical evidence I.x I - Interstitial/parenchymal lung disease
I.x - Pleuroparenchymal fibroelastosis (PPFE) II.b II - Pulmonary edema - Acute lung injury - ARDS
II.b - ARDS - Acute lung injury III.c III - Pulmonary/alveolar./airway hemorrhage/bleeding
III.c - Hemoptysis IV.h IV - Airway involvement
IV.h - Large airway necrosis IV.k IV - Airway involvement
IV.k - Bronchiectasis IV.m IV - Airway involvement
IV.m - Bronchial stenosis/stricture V.a V - Pleural and/or pericardial involvement
V.a - Pleural effusion (uni- or bilateral) (can accompany DI-LDs) V.b V - Pleural and/or pericardial involvement
V.b - Eosinophilic pleural effusion V.c V - Pleural and/or pericardial involvement
V.c - Pleural thickening V.f V - Pleural and/or pericardial involvement
V.f - Pneumothorax V.h V - Pleural and/or pericardial involvement
V.h - Chylothorax V.l V - Pleural and/or pericardial involvement
V.l - Malignant pleural mesothelioma V.m V - Pleural and/or pericardial involvement
V.m - Pleuropericarditis - Pleuropericardial effusion (ANA unknown or negative) V.t V - Pleural and/or pericardial involvement
V.t - The apical cap VI.c VI - Pulmonary vasculopathies
VI.c - Pulmonary veno-occlusive disease VI.t VI - Pulmonary vasculopathies
VI.t - Pulmonary artery aneurysm(s) VI.ab VI - Pulmonary vasculopathies
VI.ab - Pulmonary artery stenosis VII.d VII - Mediastinal involvement
VII.d - Fibrosing mediastinitis VII.i VII - Mediastinal involvement
VII.i - Mediastinitis VII.j VII - Mediastinal involvement
VII.j - Compression of mediastinal structures/organs VII.l VII - Mediastinal involvement
VII.l - Calcification of mediastinal lymph nodes VIII.c VIII - Central-large-upper airway (incl. pharyngeal-nasal) involvement
VIII.c - Upper airway obstruction other than angioedema or hematoma VIII.j VIII - Central-large-upper airway (incl. pharyngeal-nasal) involvement
VIII.j - Laryngeal disorder-Laryngeal nerve palsy (dysphonia, hoarseness) VIII.r VIII - Central-large-upper airway (incl. pharyngeal-nasal) involvement
VIII.r - Tracheal/large airway necrosis, chondronecrosis, perforation VIII.t VIII - Central-large-upper airway (incl. pharyngeal-nasal) involvement
VIII.t - Vocal cord paresis/paralysis VIII.ab VIII - Central-large-upper airway (incl. pharyngeal-nasal) involvement
VIII.ab - Airway (e.g. tracheoesophageal) fistula IX.a IX - Neuromuscular / CNS involvement - Disordered breathing during sleep
IX.a - Diaphragm/inspiratory muscle weakness/paralysis (w/wo ARF) IX.aj IX - Neuromuscular / CNS involvement - Disordered breathing during sleep
IX.aj - Paraspinal muscle myositis/myopathy/neuromyopathy +- the dropped head syndrome XI.g XI - Miscellaneous
XI.g - Aspiration, aspiration pneumonia (w/wo demonstrable pharyngeal dysmotility) XI.h XI - Miscellaneous
XI.h - Esophageal pathology (erosion, ulcer, tear, rupture, fistula) XI.i XI - Miscellaneous
XI.i - Esophageal toxicity XI.p XI - Miscellaneous
XI.p - Chest deformity: platythorax XI.v XI - Miscellaneous
XI.v - Rib fracture XI.ag XI - Miscellaneous
XI.ag - Vertebral compression fracture XI.ax XI - Miscellaneous
XI.ax - Esophageal stenosis/stricture XI.bb XI - Miscellaneous
XI.bb - Aorto-esophageal fistula XI.bs XI - Miscellaneous
XI.bs - Dropped-head syndrome XII.a XII - Cardiovascular involvement / toxicity
XII.a - Left or biventricular dysfunction/failure XII.b XII - Cardiovascular involvement / toxicity
XII.b - Valvular heart disease and/or dysfunction XII.f XII - Cardiovascular involvement / toxicity
XII.f - Cardiomyopathy (acute, subacute, chronic) XII.g XII - Cardiovascular involvement / toxicity
XII.g - Coronary artery disease (acute) - Myocardial ischemia/infarction XII.k XII - Cardiovascular involvement / toxicity
XII.k - Constrictive pericarditis - Pericardial thickening XII.o XII - Cardiovascular involvement / toxicity
XII.o - Coronary artery disease (subacute, chronic) XII.s XII - Cardiovascular involvement / toxicity
XII.s - Heart block (bundle branch- or AV-) XII.ad XII - Cardiovascular involvement / toxicity
XII.ad - Effusive-constrictive pericarditis XII.ak XII - Cardiovascular involvement / toxicity
XII.ak - Late left ventricular dysfunction/failure XII.an XII - Cardiovascular involvement / toxicity
XII.an - Pericardial calcification XII.bc XII - Cardiovascular involvement / toxicity
XII.bc - Coarctation of the aorta (acquired) XIII.a XIII - Neoplastic conditions
XIII.a - Lung cancer XIII.d XIII - Neoplastic conditions
XIII.d - Malignant mesothelioma (pleural, pericardial) XIII.e XIII - Neoplastic conditions
XIII.e - Breast cancer XIII.j XIII - Neoplastic conditions
XIII.j - Pulmonary synovial sarcoma XIII.l XIII - Neoplastic conditions
XIII.l - Chondrosarcoma XIII.m XIII - Neoplastic conditions
XIII.m - Tumor of the heart XV.f XV - Pathology
XV.f - Path: Diffuse alveolar damage (DAD-pattern) (see also IL) XV.l XV - Pathology
XV.l - Path: Pulmonary fibrosis (not otherwise specified or unclassifiable) XVI.ab XVI - Imaging
XVI.ab - Imaging: Cavitating/cavitary lung nodule, mass or nodules (see also Iq, XIs, XIIi, XVIaa and XVIIp) XVI.bi XVI - Imaging
XVI.bi - Imaging: Hyperlucent lung XVI.bj XVI - Imaging
XVI.bj - Imaging: Atelectasis (a combination of increased density and volume loss. Typically lobar)

I.a I - Interstitial/parenchymal lung disease
I.a - Pneumonitis (ILD), acute and/or severe (may cause ARDS) I.b I - Interstitial/parenchymal lung disease
I.b - Pneumonitis (ILD) I.c I - Interstitial/parenchymal lung disease
I.c - Eosinophilic pneumonia (pulmonary infiltrates and eosinophilia) I.d I - Interstitial/parenchymal lung disease
I.d - Organizing pneumonia pattern (an area or areas of consolidation on imaging) I.g I - Interstitial/parenchymal lung disease
I.g - Pulmonary fibrosis I.h I - Interstitial/parenchymal lung disease
I.h - Subclinical pulmonary infiltrates/ILD I.k I - Interstitial/parenchymal lung disease
I.k - Lung nodule or nodules I.l I - Interstitial/parenchymal lung disease
I.l - Diffuse alveolar damage (DAD) (see alsoo under IIb and XVf) I.o I - Interstitial/parenchymal lung disease
I.o - Focal/localized area of pneumonitis/fibrosis I.v I - Interstitial/parenchymal lung disease
I.v - Abnormal lung function/pulmonary physiology (PFTs) without necessarily imaging or clinical evidence I.x I - Interstitial/parenchymal lung disease
I.x - Pleuroparenchymal fibroelastosis (PPFE) I.y I - Interstitial/parenchymal lung disease
I.y - Progression, acceleration or exacerbation of preexisting ILD/fibrosis II.b II - Pulmonary edema - Acute lung injury - ARDS
II.b - ARDS - Acute lung injury III.h III - Pulmonary/alveolar./airway hemorrhage/bleeding
III.h - Major/massive hemoptysis IV.h IV - Airway involvement
IV.h - Large airway necrosis IV.m IV - Airway involvement
IV.m - Bronchial stenosis/stricture V.a V - Pleural and/or pericardial involvement
V.a - Pleural effusion (uni- or bilateral) (can accompany DI-LDs) V.c V - Pleural and/or pericardial involvement
V.c - Pleural thickening V.f V - Pleural and/or pericardial involvement
V.f - Pneumothorax V.h V - Pleural and/or pericardial involvement
V.h - Chylothorax V.k V - Pleural and/or pericardial involvement
V.k - Pleural calcifications VI.c VI - Pulmonary vasculopathies
VI.c - Pulmonary veno-occlusive disease VI.x VI - Pulmonary vasculopathies
VI.x - Pulmonary lymphangiectasis VII.d VII - Mediastinal involvement
VII.d - Fibrosing mediastinitis VIII.c VIII - Central-large-upper airway (incl. pharyngeal-nasal) involvement
VIII.c - Upper airway obstruction other than angioedema or hematoma VIII.r VIII - Central-large-upper airway (incl. pharyngeal-nasal) involvement
VIII.r - Tracheal/large airway necrosis, chondronecrosis, perforation VIII.t VIII - Central-large-upper airway (incl. pharyngeal-nasal) involvement
VIII.t - Vocal cord paresis/paralysis VIII.ab VIII - Central-large-upper airway (incl. pharyngeal-nasal) involvement
VIII.ab - Airway (e.g. tracheoesophageal) fistula IX.j IX - Neuromuscular / CNS involvement - Disordered breathing during sleep
IX.j - Phrenic nerve injury - Hemi- or bilateral diaphragmatic paralysis XI.b XI - Miscellaneous
XI.b - Chest pain (acute or subacute), lone or prominent XI.h XI - Miscellaneous
XI.h - Esophageal pathology (erosion, ulcer, tear, rupture, fistula) XI.i XI - Miscellaneous
XI.i - Esophageal toxicity XI.j XI - Miscellaneous
XI.j - Esophageal dysmotility XI.w XI - Miscellaneous
XI.w - Cavitation/necrosis of lung tumor or metastases XI.ag XI - Miscellaneous
XI.ag - Vertebral compression fracture XII.b XII - Cardiovascular involvement / toxicity
XII.b - Valvular heart disease and/or dysfunction XII.k XII - Cardiovascular involvement / toxicity
XII.k - Constrictive pericarditis - Pericardial thickening XII.o XII - Cardiovascular involvement / toxicity
XII.o - Coronary artery disease (subacute, chronic) XII.s XII - Cardiovascular involvement / toxicity
XII.s - Heart block (bundle branch- or AV-) XIII.e XIII - Neoplastic conditions
XIII.e - Breast cancer XV.c XV - Pathology
XV.c - Path: Organizing pneumonia (OP/BOOP) pattern (see also Id) XV.f XV - Pathology
XV.f - Path: Diffuse alveolar damage (DAD-pattern) (see also IL) XV.h XV - Pathology
XV.h - Path: NSIP-fibrotic pattern XV.i XV - Pathology
XV.i - Path: Pneumocyte atypia (reactive epithelial cells) (a.k.a. the "Napoleon Hat" sign) XV.bm XV - Pathology
XV.bm - Path: Diffuse lymphangiectasis XVI.bl XVI - Imaging
XVI.bl - Imaging: An area or areas of avid tracer uptake in the lung/chest on 18F-PET scan XVII.e XVII - Infections & related conditions
XVII.e - Pneumocystis jiroveci pneumonia XVII.af XVII - Infections & related conditions
XVII.af - Reactivation of a prior pulmonary infection (TB, melioidosis) XIX.a XIX - Cytological, biochemical features of/in BAL, pleural fluid or FNA
XIX.a - BAL: An excess proportion of lymphocytes

I.b I - Interstitial/parenchymal lung disease
I.b - Pneumonitis (ILD) I.c I - Interstitial/parenchymal lung disease
I.c - Eosinophilic pneumonia (pulmonary infiltrates and eosinophilia) I.d I - Interstitial/parenchymal lung disease
I.d - Organizing pneumonia pattern (an area or areas of consolidation on imaging) I.e I - Interstitial/parenchymal lung disease
I.e - Acute eosinophilic pneumonia (AEP) I.l I - Interstitial/parenchymal lung disease
I.l - Diffuse alveolar damage (DAD) (see alsoo under IIb and XVf) I.x I - Interstitial/parenchymal lung disease
I.x - Pleuroparenchymal fibroelastosis (PPFE) V.b V - Pleural and/or pericardial involvement
V.b - Eosinophilic pleural effusion V.d V - Pleural and/or pericardial involvement
V.d - Pleural/pericardial effusion, ANA positive (DI lupus) V.h V - Pleural and/or pericardial involvement
V.h - Chylothorax IX.a IX - Neuromuscular / CNS involvement - Disordered breathing during sleep
IX.a - Diaphragm/inspiratory muscle weakness/paralysis (w/wo ARF) X.j X - Systemic/Distant conditions, syndromes and reactions
X.j - Myopathy-Myositis-Polymyositis (see also under Xba) XI.b XI - Miscellaneous
XI.b - Chest pain (acute or subacute), lone or prominent XV.a XV - Pathology
XV.a - Path: NSIP-cellular pattern (see also Ia, Ib) XV.o XV - Pathology
XV.o - Path: Endogenous lipoid pneumonia (phospholipidosis) XV.ap XV - Pathology
XV.ap - Path: Pleuroparenchymal fibrosis/fibroelastosis (PPFE)

I.a I - Interstitial/parenchymal lung disease
I.a - Pneumonitis (ILD), acute and/or severe (may cause ARDS) I.b I - Interstitial/parenchymal lung disease
I.b - Pneumonitis (ILD) I.d I - Interstitial/parenchymal lung disease
I.d - Organizing pneumonia pattern (an area or areas of consolidation on imaging) I.f I - Interstitial/parenchymal lung disease
I.f - Acute fibrinous organizing pneumonia (AFOP) I.g I - Interstitial/parenchymal lung disease
I.g - Pulmonary fibrosis I.u I - Interstitial/parenchymal lung disease
I.u - Relapsing or migrating pneumonitis/pneumonia (see also Id) I.x I - Interstitial/parenchymal lung disease
I.x - Pleuroparenchymal fibroelastosis (PPFE) I.ar I - Interstitial/parenchymal lung disease
I.ar - The association of ILD and myositis IV.d IV - Airway involvement
IV.d - Cough (lone) V.a V - Pleural and/or pericardial involvement
V.a - Pleural effusion (uni- or bilateral) (can accompany DI-LDs) V.b V - Pleural and/or pericardial involvement
V.b - Eosinophilic pleural effusion V.d V - Pleural and/or pericardial involvement
V.d - Pleural/pericardial effusion, ANA positive (DI lupus) V.h V - Pleural and/or pericardial involvement
V.h - Chylothorax VIII.a VIII - Central-large-upper airway (incl. pharyngeal-nasal) involvement
VIII.a - Angioedema (may cause UAO, asphyxia and death) IX.a IX - Neuromuscular / CNS involvement - Disordered breathing during sleep
IX.a - Diaphragm/inspiratory muscle weakness/paralysis (w/wo ARF) IX.ac IX - Neuromuscular / CNS involvement - Disordered breathing during sleep
IX.ac - Myositis of the respiratory muscles (May lead to respiratory muscle paralysis) X.d X - Systemic/Distant conditions, syndromes and reactions
X.d - Lupus - Lupus syndrome (see also Vd) X.j X - Systemic/Distant conditions, syndromes and reactions
X.j - Myopathy-Myositis-Polymyositis (see also under Xba) X.ba X - Systemic/Distant conditions, syndromes and reactions
X.ba - Rhabdomyolysis (see also under Xj) XI.b XI - Miscellaneous
XI.b - Chest pain (acute or subacute), lone or prominent XII.ab XII - Cardiovascular involvement / toxicity
XII.ab - Pericardial fat necrosis XV.c XV - Pathology
XV.c - Path: Organizing pneumonia (OP/BOOP) pattern (see also Id) XV.d XV - Pathology
XV.d - Path: Acute fibrinous organizing pneumonia (AFOP-pattern) (see also If) XV.h XV - Pathology
XV.h - Path: NSIP-fibrotic pattern XV.o XV - Pathology
XV.o - Path: Endogenous lipoid pneumonia (phospholipidosis) XV.ap XV - Pathology
XV.ap - Path: Pleuroparenchymal fibrosis/fibroelastosis (PPFE) XV.co XV - Pathology
XV.co - Path: Foamy inclusions in alveolar macrophages and/or in other lung cells XVI.bx XVI - Imaging
XVI.bx - Imaging: Waxing and waning nodules XIX.f XIX - Cytological, biochemical features of/in BAL, pleural fluid or FNA
XIX.f - BAL: Foamy macrophages

I.y I - Interstitial/parenchymal lung disease
I.y - Progression, acceleration or exacerbation of preexisting ILD/fibrosis V.a V - Pleural and/or pericardial involvement
V.a - Pleural effusion (uni- or bilateral) (can accompany DI-LDs) V.c V - Pleural and/or pericardial involvement
V.c - Pleural thickening V.f V - Pleural and/or pericardial involvement
V.f - Pneumothorax V.h V - Pleural and/or pericardial involvement
V.h - Chylothorax VII.i VII - Mediastinal involvement
VII.i - Mediastinitis X.k X - Systemic/Distant conditions, syndromes and reactions
X.k - Sarcoid-like granulomatosis (endo-/extrathoracic) XII.k XII - Cardiovascular involvement / toxicity
XII.k - Constrictive pericarditis - Pericardial thickening XVIII.e XVIII - Distinctive patterns - 'Eye-catchers'
XVIII.e - Eye-catcher: Multiple radiolucent balls