| Inbound Relationships | Type | Active | Source | Characteristic | Refinability | Group | 
| Structure of lower respiratory fluids and spaces | Is a | True | Lower respiratory tract structure | Inferred relationship | Existential restriction modifier |  | 
| Entire lower respiratory tract | Is a | True | Lower respiratory tract structure | Inferred relationship | Existential restriction modifier |  | 
| Structure of lower respiratory spaces | Is a | True | Lower respiratory tract structure | Inferred relationship | Existential restriction modifier |  | 
| Lung structure | Is a | True | Lower respiratory tract structure | Inferred relationship | Existential restriction modifier |  | 
| Tracheobronchial structure | Is a | False | Lower respiratory tract structure | Inferred relationship | Existential restriction modifier |  | 
| Tuberculosis of pleura | Finding site | False | Lower respiratory tract structure | Inferred relationship | Existential restriction modifier |  | 
| Respiratory movement finding | Finding site | False | Lower respiratory tract structure | Inferred relationship | Existential restriction modifier |  | 
| Acute exacerbation of chronic obstructive airways disease | Finding site | False | Lower respiratory tract structure | Inferred relationship | Existential restriction modifier | 1 | 
| Respiratory murmur | Finding site | True | Lower respiratory tract structure | Inferred relationship | Existential restriction modifier | 1 | 
| Meconium aspiration syndrome | Finding site | False | Lower respiratory tract structure | Inferred relationship | Existential restriction modifier | 2 | 
| Neonatal aspiration of blood | Finding site | False | Lower respiratory tract structure | Inferred relationship | Existential restriction modifier |  | 
| Aspiration of vomit in newborn | Finding site | False | Lower respiratory tract structure | Inferred relationship | Existential restriction modifier | 2 | 
| Postoperative chest infection | Finding site | False | Lower respiratory tract structure | Inferred relationship | Existential restriction modifier |  | 
| [X]Inhalation of gastric contents, occurrence at home | Finding site | False | Lower respiratory tract structure | Inferred relationship | Existential restriction modifier |  | 
| [X]Inhalation of gastric contents, occurrence in residential institution | Finding site | False | Lower respiratory tract structure | Inferred relationship | Existential restriction modifier |  | 
| [X]Inhalation of gastric contents, occurrence at school, other institution and public administrative area | Finding site | False | Lower respiratory tract structure | Inferred relationship | Existential restriction modifier |  | 
| [X]Inhalation of gastric contents, occurrence at sports and athletics area | Finding site | False | Lower respiratory tract structure | Inferred relationship | Existential restriction modifier |  | 
| [X]Inhalation of gastric contents, occurrence on street and highway | Finding site | False | Lower respiratory tract structure | Inferred relationship | Existential restriction modifier |  | 
| [X]Inhalation of gastric contents, occurrence at trade and service area | Finding site | False | Lower respiratory tract structure | Inferred relationship | Existential restriction modifier |  | 
| [X]Inhalation of gastric contents, occurrence at industrial and construction area | Finding site | False | Lower respiratory tract structure | Inferred relationship | Existential restriction modifier |  | 
| [X]Inhalation of gastric contents, occurrence on farm | Finding site | False | Lower respiratory tract structure | Inferred relationship | Existential restriction modifier |  | 
| [X]Inhalation of gastric contents, occurrence at other specified place | Finding site | False | Lower respiratory tract structure | Inferred relationship | Existential restriction modifier |  | 
| [X]Inhalation of gastric contents, occurrence at unspecified place | Finding site | False | Lower respiratory tract structure | Inferred relationship | Existential restriction modifier |  | 
| [X]Inhalation and ingestion of food causing obstruction of respiratory tract | Finding site | False | Lower respiratory tract structure | Inferred relationship | Existential restriction modifier |  | 
| [X]Inhalation and ingestion of food causing obstruction of respiratory tract, occurrence at home | Finding site | False | Lower respiratory tract structure | Inferred relationship | Existential restriction modifier |  | 
| [X]Inhalation and ingestion of food causing obstruction of respiratory tract, occurrence in residential institution | Finding site | False | Lower respiratory tract structure | Inferred relationship | Existential restriction modifier |  | 
| [X]Inhalation and ingestion of food causing obstruction of respiratory tract, occurrence at school, other institution and public administrative area | Finding site | False | Lower respiratory tract structure | Inferred relationship | Existential restriction modifier |  | 
| [X]Inhalation and ingestion of food causing obstruction of respiratory tract, occurrence at sports and athletics area | Finding site | False | Lower respiratory tract structure | Inferred relationship | Existential restriction modifier |  | 
| [X]Inhalation and ingestion of food causing obstruction of respiratory tract, occurrence on street and highway | Finding site | False | Lower respiratory tract structure | Inferred relationship | Existential restriction modifier |  | 
| [X]Inhalation and ingestion of food causing obstruction of respiratory tract, occurrence at trade and service area | Finding site | False | Lower respiratory tract structure | Inferred relationship | Existential restriction modifier |  | 
| [X]Inhalation and ingestion of food causing obstruction of respiratory tract, occurrence at industrial and construction area | Finding site | False | Lower respiratory tract structure | Inferred relationship | Existential restriction modifier |  | 
| [X]Inhalation and ingestion of food causing obstruction of respiratory tract, occurrence on farm | Finding site | False | Lower respiratory tract structure | Inferred relationship | Existential restriction modifier |  | 
| [X]Inhalation and ingestion of food causing obstruction of respiratory tract, occurrence at other specified place | Finding site | False | Lower respiratory tract structure | Inferred relationship | Existential restriction modifier |  | 
| [X]Inhalation and ingestion of food causing obstruction of respiratory tract, occurrence at unspecified place | Finding site | False | Lower respiratory tract structure | Inferred relationship | Existential restriction modifier |  | 
| Sandifer syndrome | Finding site | False | Lower respiratory tract structure | Inferred relationship | Existential restriction modifier |  | 
| Acute infective exacerbation of chronic obstructive airways disease | Finding site | False | Lower respiratory tract structure | Inferred relationship | Existential restriction modifier | 1 | 
| Tuberculous chylothorax | Finding site | False | Lower respiratory tract structure | Inferred relationship | Existential restriction modifier |  | 
| Mill fever | Finding site | False | Lower respiratory tract structure | Inferred relationship | Existential restriction modifier | 1 | 
| Endobronchial sarcoidosis | Finding site | False | Lower respiratory tract structure | Inferred relationship | Existential restriction modifier | 1 | 
| Terminal bronchiole and lung (combined site) | Part of | False | Lower respiratory tract structure | Additional relationship | Existential restriction modifier |  | 
| Diaphragmatic movement | Finding site | False | Lower respiratory tract structure | Inferred relationship | Existential restriction modifier |  | 
| Chest movement | Finding site | False | Lower respiratory tract structure | Inferred relationship | Existential restriction modifier |  | 
| Symmetry of chest movement | Finding site | False | Lower respiratory tract structure | Inferred relationship | Existential restriction modifier |  | 
| Chest movement equal | Finding site | True | Lower respiratory tract structure | Inferred relationship | Existential restriction modifier | 1 | 
| Left side of chest moves less than right | Finding site | True | Lower respiratory tract structure | Inferred relationship | Existential restriction modifier | 1 | 
| Right side of chest moves less than left | Finding site | True | Lower respiratory tract structure | Inferred relationship | Existential restriction modifier | 1 | 
| Paradoxical chest movement | Finding site | True | Lower respiratory tract structure | Inferred relationship | Existential restriction modifier | 1 | 
| Hemithorax immobile | Finding site | True | Lower respiratory tract structure | Inferred relationship | Existential restriction modifier | 1 | 
| Respiratory effort | Finding site | False | Lower respiratory tract structure | Inferred relationship | Existential restriction modifier |  | 
| Visible respiratory effort | Finding site | True | Lower respiratory tract structure | Inferred relationship | Existential restriction modifier | 1 | 
| Indrawing of ribs during respiration | Finding site | True | Lower respiratory tract structure | Inferred relationship | Existential restriction modifier | 1 | 
| Sternal recession | Finding site | False | Lower respiratory tract structure | Inferred relationship | Existential restriction modifier |  | 
| Coin sign present | Finding site | False | Lower respiratory tract structure | Inferred relationship | Existential restriction modifier |  | 
| Chest resonance to percussion | Finding site | False | Lower respiratory tract structure | Inferred relationship | Existential restriction modifier |  | 
| Hepatic dullness to percussion in chest | Finding site | False | Lower respiratory tract structure | Inferred relationship | Existential restriction modifier |  | 
| Diaphragmatic dullness to percussion | Finding site | False | Lower respiratory tract structure | Inferred relationship | Existential restriction modifier |  | 
| Diaphragmatic dullness to percussion displaced upwards | Finding site | True | Lower respiratory tract structure | Inferred relationship | Existential restriction modifier | 1 | 
| Large airway sounds | Finding site | True | Lower respiratory tract structure | Inferred relationship | Existential restriction modifier | 1 | 
| Increased vocal resonance | Finding site | True | Lower respiratory tract structure | Inferred relationship | Existential restriction modifier | 1 | 
| Decreased vocal resonance | Finding site | True | Lower respiratory tract structure | Inferred relationship | Existential restriction modifier | 1 | 
| Moist crackles | Finding site | True | Lower respiratory tract structure | Inferred relationship | Existential restriction modifier | 1 | 
| Bubbling crackles | Finding site | True | Lower respiratory tract structure | Inferred relationship | Existential restriction modifier | 1 | 
| Transmitted sounds | Finding site | True | Lower respiratory tract structure | Inferred relationship | Existential restriction modifier | 1 | 
| Respiratory clicking sound | Finding site | True | Lower respiratory tract structure | Inferred relationship | Existential restriction modifier | 1 | 
| Respiratory squawk | Finding site | True | Lower respiratory tract structure | Inferred relationship | Existential restriction modifier | 1 | 
| Respiratory squeak | Finding site | True | Lower respiratory tract structure | Inferred relationship | Existential restriction modifier | 1 | 
| Succussion splash in chest | Finding site | True | Lower respiratory tract structure | Inferred relationship | Existential restriction modifier | 1 | 
| Exocardial sounds | Finding site | False | Lower respiratory tract structure | Inferred relationship | Existential restriction modifier |  | 
| Exocardial murmurs | Finding site | True | Lower respiratory tract structure | Inferred relationship | Existential restriction modifier | 1 | 
| Cardiorespiratory murmur | Finding site | True | Lower respiratory tract structure | Inferred relationship | Existential restriction modifier | 1 | 
| Chest over-expanded | Finding site | False | Lower respiratory tract structure | Inferred relationship | Existential restriction modifier | 2 | 
| Congenital unilateral absence of hemidiaphragm | Finding site | False | Lower respiratory tract structure | Inferred relationship | Existential restriction modifier | 1 | 
| Congenital absent hemidiaphragm - bilateral | Finding site | False | Lower respiratory tract structure | Inferred relationship | Existential restriction modifier | 1 | 
| Abdominal respiratory movements | Finding site | False | Lower respiratory tract structure | Inferred relationship | Existential restriction modifier |  | 
| Fremitus | Finding site | True | Lower respiratory tract structure | Inferred relationship | Existential restriction modifier | 2 | 
| Chest respiratory movements | Finding site | False | Lower respiratory tract structure | Inferred relationship | Existential restriction modifier |  | 
| Accessory respiratory muscles used | Finding site | True | Lower respiratory tract structure | Inferred relationship | Existential restriction modifier | 1 | 
| Chest movement unequal | Finding site | True | Lower respiratory tract structure | Inferred relationship | Existential restriction modifier | 1 | 
| Chest percussion finding | Finding site | False | Lower respiratory tract structure | Inferred relationship | Existential restriction modifier |  | 
| Neonatal aspiration syndrome | Finding site | False | Lower respiratory tract structure | Inferred relationship | Existential restriction modifier | 2 | 
| Neonatal aspiration of amniotic fluid | Finding site | False | Lower respiratory tract structure | Inferred relationship | Existential restriction modifier | 3 | 
| Neonatal aspiration of mucus | Finding site | False | Lower respiratory tract structure | Inferred relationship | Existential restriction modifier | 3 | 
| Neonatal aspiration of milk | Finding site | False | Lower respiratory tract structure | Inferred relationship | Existential restriction modifier |  | 
| Suprasternal recession | Finding site | True | Lower respiratory tract structure | Inferred relationship | Existential restriction modifier | 1 | 
| Aspiration into lower respiratory tract | Finding site | True | Lower respiratory tract structure | Inferred relationship | Existential restriction modifier | 1 | 
| Aspirated gastric contents in lower respiratory tract | Finding site | True | Lower respiratory tract structure | Inferred relationship | Existential restriction modifier | 1 | 
| Aspirated blood in lower respiratory tract | Finding site | True | Lower respiratory tract structure | Inferred relationship | Existential restriction modifier | 1 | 
| Aspiration of foreign body into lower respiratory tract | Finding site | False | Lower respiratory tract structure | Inferred relationship | Existential restriction modifier | 1 | 
| Neonatal aspiration of meconium | Finding site | False | Lower respiratory tract structure | Inferred relationship | Existential restriction modifier | 3 | 
| Injury of lower respiratory tract | Finding site | False | Lower respiratory tract structure | Inferred relationship | Existential restriction modifier | 1 | 
| Pulmonary aspiration of fluid | Finding site | False | Lower respiratory tract structure | Inferred relationship | Existential restriction modifier |  | 
| Basal crepitations | Finding site | True | Lower respiratory tract structure | Inferred relationship | Existential restriction modifier | 1 | 
| Lower respiratory tract finding | Finding site | True | Lower respiratory tract structure | Inferred relationship | Existential restriction modifier | 1 | 
| Respiratory finding of chest | Finding site | True | Lower respiratory tract structure | Inferred relationship | Existential restriction modifier | 1 | 
| Chest movement absent | Finding site | True | Lower respiratory tract structure | Inferred relationship | Existential restriction modifier | 1 | 
| Appearance of chest movement | Finding site | False | Lower respiratory tract structure | Inferred relationship | Existential restriction modifier |  | 
| Chest expansion normal | Finding site | False | Lower respiratory tract structure | Inferred relationship | Existential restriction modifier | 2 | 
| Chest percussion note ringing | Finding site | False | Lower respiratory tract structure | Inferred relationship | Existential restriction modifier |  | 
| Chest resonance to percussion reduced | Finding site | False | Lower respiratory tract structure | Inferred relationship | Existential restriction modifier |  | 
| Cardiac dullness to percussion normal | Finding site | False | Lower respiratory tract structure | Inferred relationship | Existential restriction modifier |  | 
| Cardiac dullness to percussion absent | Finding site | False | Lower respiratory tract structure | Inferred relationship | Existential restriction modifier |  |