| Abbreviations | Meaning |
 | PISA-PED | Prospective Investigative Study Of Acute Pulmonary Embolism Diagnosis |
| TTL | Total Thymus Lymphocytes; Training Test Lung; Transistor-transistor Logic |
| PVD | Pulmonary Valvular Dysplasia |
| CRPD | Chronic Restrictive Pulmonary Disease |
| PPA | Posterior Margin Of Pulmonary Artery |
| PEM | Pulmonary Endothelial Membrane |
| PPA | Pulmonary Artery Pressure |
| PHTN | Pulmonary Hypertension |
| COPE | Chronic Obstructive Pulmonary Emphysema |
| PBT | Paul-Bunnell Test; Phenacetin Breath Test; Piebald Trait; Profile-based Therapy; Pulmonary Barotrauma |
| TPA | Thrombotic Pulmonary Artery |
| TBB | Transbronchial Biopsy |
| PTE | Parathyroid Extract; Posttraumatic Epilepsy; Pretibial Edema; Proximal Tibial Epiphysis; Pulmonary Thromboembolism |
| LLA | Left Lung Apex; Limulus Lysate Assay; Lipid-lowering Agent |
| BPT | Benign Paroxysmal Torticollis; Binding Property Torsion; Bronchial Provocation Test |
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