| Inbound Relationships | Type | Active | Source | Characteristic | Refinability | Group | 
| Extradural hemorrhage following injury with open intracranial wound, with no loss of consciousness | Finding site | False | Structure of cranial epidural space | Inferred relationship | Existential restriction modifier | 2 | 
| Drainage of cerebral epidural space by aspiration | Procedure site - Indirect | False | Structure of cranial epidural space | Inferred relationship | Existential restriction modifier | 2 | 
| Drainage of cerebral epidural space by aspiration | Procedure site - Indirect | False | Structure of cranial epidural space | Inferred relationship | Existential restriction modifier | 1 | 
| Extradural hemorrhage following injury without open intracranial wound AND with prolonged loss of consciousness (more than 24 hours) AND return to pre-existing conscious level | Finding site | False | Structure of cranial epidural space | Inferred relationship | Existential restriction modifier | 1 | 
| Extradural hemorrhage following injury without open intracranial wound AND with prolonged loss of consciousness (more than 24 hours) AND return to pre-existing conscious level | Finding site | False | Structure of cranial epidural space | Inferred relationship | Existential restriction modifier | 2 | 
| Extradural hemorrhage following injury without open intracranial wound AND with brief loss of consciousness (less than one hour) | Finding site | False | Structure of cranial epidural space | Inferred relationship | Existential restriction modifier | 2 | 
| Extradural hemorrhage following injury without open intracranial wound AND with brief loss of consciousness (less than one hour) | Finding site | False | Structure of cranial epidural space | Inferred relationship | Existential restriction modifier | 3 | 
| Extradural hemorrhage following injury without open intracranial wound AND with prolonged loss of consciousness (more than 24 hours) without return to pre-existing conscious level | Finding site | False | Structure of cranial epidural space | Inferred relationship | Existential restriction modifier | 2 | 
| Extradural hemorrhage following injury without open intracranial wound AND with prolonged loss of consciousness (more than 24 hours) without return to pre-existing conscious level | Finding site | False | Structure of cranial epidural space | Inferred relationship | Existential restriction modifier | 3 | 
| Extradural hemorrhage following injury without open intracranial wound AND with loss of consciousness | Finding site | False | Structure of cranial epidural space | Inferred relationship | Existential restriction modifier | 2 | 
| Extradural hemorrhage following injury without open intracranial wound AND with loss of consciousness | Finding site | False | Structure of cranial epidural space | Inferred relationship | Existential restriction modifier | 3 | 
| Extradural hemorrhage following injury without open intracranial wound AND with concussion | Finding site | False | Structure of cranial epidural space | Inferred relationship | Existential restriction modifier | 1 | 
| Extradural hemorrhage following injury without open intracranial wound AND with concussion | Finding site | False | Structure of cranial epidural space | Inferred relationship | Existential restriction modifier | 2 | 
| Extradural hemorrhage following injury with open intracranial wound AND prolonged loss of consciousness (more than 24 hours) without return to pre-existing conscious level | Finding site | False | Structure of cranial epidural space | Inferred relationship | Existential restriction modifier | 2 | 
| Extradural hemorrhage following injury with open intracranial wound AND prolonged loss of consciousness (more than 24 hours) without return to pre-existing conscious level | Finding site | False | Structure of cranial epidural space | Inferred relationship | Existential restriction modifier | 4 | 
| Extradural hemorrhage following injury without open intracranial wound AND with moderate loss of consciousness (1-24 hours) | Finding site | False | Structure of cranial epidural space | Inferred relationship | Existential restriction modifier | 1 | 
| Extradural hemorrhage following injury without open intracranial wound AND with moderate loss of consciousness (1-24 hours) | Finding site | False | Structure of cranial epidural space | Inferred relationship | Existential restriction modifier | 3 | 
| Extradural hemorrhage following injury with open intracranial wound, with no loss of consciousness | Finding site | False | Structure of cranial epidural space | Inferred relationship | Existential restriction modifier | 4 | 
| Extradural hemorrhage following injury with open intracranial wound, with no loss of consciousness | Finding site | False | Structure of cranial epidural space | Inferred relationship | Existential restriction modifier | 2 | 
| Drainage of cerebral epidural space by aspiration | Procedure site - Indirect | False | Structure of cranial epidural space | Inferred relationship | Existential restriction modifier | 1 | 
| Drainage of cerebral epidural space by aspiration | Procedure site - Indirect | False | Structure of cranial epidural space | Inferred relationship | Existential restriction modifier | 2 | 
| Extradural hemorrhage following injury without open intracranial wound AND with prolonged loss of consciousness (more than 24 hours) AND return to pre-existing conscious level | Finding site | False | Structure of cranial epidural space | Inferred relationship | Existential restriction modifier | 1 | 
| Extradural hemorrhage following injury without open intracranial wound AND with prolonged loss of consciousness (more than 24 hours) AND return to pre-existing conscious level | Finding site | False | Structure of cranial epidural space | Inferred relationship | Existential restriction modifier | 2 | 
| Extradural hemorrhage following injury without open intracranial wound AND with brief loss of consciousness (less than one hour) | Finding site | False | Structure of cranial epidural space | Inferred relationship | Existential restriction modifier | 2 | 
| Extradural hemorrhage following injury without open intracranial wound AND with brief loss of consciousness (less than one hour) | Finding site | False | Structure of cranial epidural space | Inferred relationship | Existential restriction modifier | 3 | 
| Extradural hemorrhage following injury without open intracranial wound AND with prolonged loss of consciousness (more than 24 hours) without return to pre-existing conscious level | Finding site | False | Structure of cranial epidural space | Inferred relationship | Existential restriction modifier | 2 | 
| Extradural hemorrhage following injury without open intracranial wound AND with prolonged loss of consciousness (more than 24 hours) without return to pre-existing conscious level | Finding site | False | Structure of cranial epidural space | Inferred relationship | Existential restriction modifier | 3 | 
| Extradural hemorrhage following injury without open intracranial wound AND with loss of consciousness | Finding site | False | Structure of cranial epidural space | Inferred relationship | Existential restriction modifier | 2 | 
| Extradural hemorrhage following injury without open intracranial wound AND with loss of consciousness | Finding site | False | Structure of cranial epidural space | Inferred relationship | Existential restriction modifier | 3 | 
| Extradural hemorrhage following injury without open intracranial wound AND with concussion | Finding site | False | Structure of cranial epidural space | Inferred relationship | Existential restriction modifier | 1 | 
| Extradural hemorrhage following injury without open intracranial wound AND with concussion | Finding site | False | Structure of cranial epidural space | Inferred relationship | Existential restriction modifier | 2 | 
| Extradural hemorrhage following injury with open intracranial wound AND prolonged loss of consciousness (more than 24 hours) without return to pre-existing conscious level | Finding site | False | Structure of cranial epidural space | Inferred relationship | Existential restriction modifier | 2 | 
| Extradural hemorrhage following injury with open intracranial wound AND prolonged loss of consciousness (more than 24 hours) without return to pre-existing conscious level | Finding site | False | Structure of cranial epidural space | Inferred relationship | Existential restriction modifier | 4 | 
| Extradural hemorrhage following injury without open intracranial wound AND with moderate loss of consciousness (1-24 hours) | Finding site | False | Structure of cranial epidural space | Inferred relationship | Existential restriction modifier | 1 | 
| Extradural hemorrhage following injury without open intracranial wound AND with moderate loss of consciousness (1-24 hours) | Finding site | False | Structure of cranial epidural space | Inferred relationship | Existential restriction modifier | 3 | 
| Extradural hemorrhage following injury with open intracranial wound, with no loss of consciousness | Finding site | False | Structure of cranial epidural space | Inferred relationship | Existential restriction modifier | 4 | 
| Extradural hemorrhage following injury with open intracranial wound, with no loss of consciousness | Finding site | False | Structure of cranial epidural space | Inferred relationship | Existential restriction modifier | 2 | 
| Drainage of cerebral epidural space by incision or trephination | Procedure site - Direct | False | Structure of cranial epidural space | Inferred relationship | Existential restriction modifier | 3 | 
| Incision of epidural or extradural space of brain | Procedure site - Direct | False | Structure of cranial epidural space | Inferred relationship | Existential restriction modifier | 3 | 
| Incision of cerebral epidural space | Procedure site - Direct | False | Structure of cranial epidural space | Inferred relationship | Existential restriction modifier | 1 | 
| Drainage of cerebral epidural space by aspiration | Procedure site - Indirect | False | Structure of cranial epidural space | Inferred relationship | Existential restriction modifier | 2 | 
| Drainage of cerebral epidural space by aspiration | Procedure site - Indirect | False | Structure of cranial epidural space | Inferred relationship | Existential restriction modifier | 1 | 
| Extradural hemorrhage following injury without open intracranial wound AND with prolonged loss of consciousness (more than 24 hours) AND return to pre-existing conscious level | Finding site | False | Structure of cranial epidural space | Inferred relationship | Existential restriction modifier | 2 | 
| Extradural hemorrhage following injury without open intracranial wound AND with prolonged loss of consciousness (more than 24 hours) AND return to pre-existing conscious level | Finding site | False | Structure of cranial epidural space | Inferred relationship | Existential restriction modifier | 1 | 
| Extradural hemorrhage following injury without open intracranial wound AND with brief loss of consciousness (less than one hour) | Finding site | False | Structure of cranial epidural space | Inferred relationship | Existential restriction modifier | 3 | 
| Extradural hemorrhage following injury without open intracranial wound AND with brief loss of consciousness (less than one hour) | Finding site | False | Structure of cranial epidural space | Inferred relationship | Existential restriction modifier | 1 | 
| Extradural hemorrhage following injury without open intracranial wound AND with prolonged loss of consciousness (more than 24 hours) without return to pre-existing conscious level | Finding site | False | Structure of cranial epidural space | Inferred relationship | Existential restriction modifier | 2 | 
| Extradural hemorrhage following injury without open intracranial wound AND with prolonged loss of consciousness (more than 24 hours) without return to pre-existing conscious level | Finding site | False | Structure of cranial epidural space | Inferred relationship | Existential restriction modifier | 1 | 
| Extradural hemorrhage following injury without open intracranial wound AND with loss of consciousness | Finding site | False | Structure of cranial epidural space | Inferred relationship | Existential restriction modifier | 1 | 
| Extradural hemorrhage following injury without open intracranial wound AND with loss of consciousness | Finding site | False | Structure of cranial epidural space | Inferred relationship | Existential restriction modifier | 2 | 
| Extradural hemorrhage following injury without open intracranial wound AND with concussion | Finding site | False | Structure of cranial epidural space | Inferred relationship | Existential restriction modifier | 1 | 
| Extradural hemorrhage following injury without open intracranial wound AND with concussion | Finding site | False | Structure of cranial epidural space | Inferred relationship | Existential restriction modifier | 2 | 
| Extradural hemorrhage following injury with open intracranial wound AND prolonged loss of consciousness (more than 24 hours) without return to pre-existing conscious level | Finding site | False | Structure of cranial epidural space | Inferred relationship | Existential restriction modifier | 1 | 
| Extradural hemorrhage following injury with open intracranial wound AND prolonged loss of consciousness (more than 24 hours) without return to pre-existing conscious level | Finding site | False | Structure of cranial epidural space | Inferred relationship | Existential restriction modifier | 1 | 
| Extradural hemorrhage following injury without open intracranial wound AND with moderate loss of consciousness (1-24 hours) | Finding site | False | Structure of cranial epidural space | Inferred relationship | Existential restriction modifier | 2 | 
| Extradural hemorrhage following injury without open intracranial wound AND with moderate loss of consciousness (1-24 hours) | Finding site | False | Structure of cranial epidural space | Inferred relationship | Existential restriction modifier | 1 | 
| Extradural hemorrhage following injury with open intracranial wound, with no loss of consciousness | Finding site | False | Structure of cranial epidural space | Inferred relationship | Existential restriction modifier | 1 | 
| Extradural hemorrhage following injury with open intracranial wound, with no loss of consciousness | Finding site | False | Structure of cranial epidural space | Inferred relationship | Existential restriction modifier | 1 | 
| Non-traumatic extradural intracranial hematoma | Finding site | False | Structure of cranial epidural space | Inferred relationship | Existential restriction modifier | 1 | 
| Drainage of cerebral epidural space by aspiration | Procedure site - Indirect | False | Structure of cranial epidural space | Inferred relationship | Existential restriction modifier | 2 | 
| Drainage of cerebral epidural space by aspiration | Procedure site - Indirect | False | Structure of cranial epidural space | Inferred relationship | Existential restriction modifier | 1 | 
| Extradural hemorrhage following injury with open intracranial wound AND moderate loss of consciousness (1-24 hours) | Finding site | False | Structure of cranial epidural space | Inferred relationship | Existential restriction modifier | 2 | 
| Extradural hemorrhage following injury without open intracranial wound | Finding site | False | Structure of cranial epidural space | Inferred relationship | Existential restriction modifier | 1 | 
| Extradural hemorrhage following injury without open intracranial wound AND with loss of consciousness | Finding site | False | Structure of cranial epidural space | Inferred relationship | Existential restriction modifier | 1 | 
| Extradural hemorrhage following injury without open intracranial wound AND with prolonged loss of consciousness (more than 24 hours) AND return to pre-existing conscious level | Finding site | False | Structure of cranial epidural space | Inferred relationship | Existential restriction modifier | 1 | 
| Extradural hemorrhage following injury with open intracranial wound AND prolonged loss of consciousness (more than 24 hours) AND return to pre-existing conscious level | Finding site | False | Structure of cranial epidural space | Inferred relationship | Existential restriction modifier | 1 | 
| Extradural hemorrhage following injury with open intracranial wound AND concussion | Finding site | False | Structure of cranial epidural space | Inferred relationship | Existential restriction modifier | 1 | 
| Extradural hemorrhage following injury without open intracranial wound AND with brief loss of consciousness (less than one hour) | Finding site | False | Structure of cranial epidural space | Inferred relationship | Existential restriction modifier | 1 | 
| Open fracture of vault of skull with subarachnoid, subdural AND/OR extradural hemorrhage | Finding site | False | Structure of cranial epidural space | Inferred relationship | Existential restriction modifier | 2 | 
| Extradural hemorrhage following injury without open intracranial wound AND with concussion | Finding site | False | Structure of cranial epidural space | Inferred relationship | Existential restriction modifier | 1 | 
| Open fracture of base of skull with subarachnoid, subdural AND/OR extradural hemorrhage | Finding site | False | Structure of cranial epidural space | Inferred relationship | Existential restriction modifier | 2 | 
| Extradural hemorrhage following injury without open intracranial wound AND with moderate loss of consciousness (1-24 hours) | Finding site | False | Structure of cranial epidural space | Inferred relationship | Existential restriction modifier | 2 | 
| Extradural hemorrhage following injury without open intracranial wound AND with prolonged loss of consciousness (more than 24 hours) AND return to pre-existing conscious level | Finding site | False | Structure of cranial epidural space | Inferred relationship | Existential restriction modifier | 1 | 
| Drainage of cerebral epidural space by incision or trephination | Procedure site - Indirect | False | Structure of cranial epidural space | Inferred relationship | Existential restriction modifier | 1 | 
| Extradural hemorrhage following injury with open intracranial wound | Finding site | False | Structure of cranial epidural space | Inferred relationship | Existential restriction modifier | 1 | 
| Extradural hemorrhage following injury with open intracranial wound AND prolonged loss of consciousness (more than 24 hours) without return to pre-existing conscious level | Finding site | False | Structure of cranial epidural space | Inferred relationship | Existential restriction modifier | 1 | 
| Extradural hemorrhage following injury with open intracranial wound AND loss of consciousness | Finding site | False | Structure of cranial epidural space | Inferred relationship | Existential restriction modifier | 1 | 
| Extradural hemorrhage following injury with open intracranial wound AND concussion | Finding site | False | Structure of cranial epidural space | Inferred relationship | Existential restriction modifier | 1 | 
| Extradural hemorrhage following injury with open intracranial wound, with no loss of consciousness | Finding site | False | Structure of cranial epidural space | Inferred relationship | Existential restriction modifier | 1 | 
| Extradural hemorrhage following injury without open intracranial wound AND with concussion | Finding site | False | Structure of cranial epidural space | Inferred relationship | Existential restriction modifier | 1 | 
| Extradural hemorrhage following injury without open intracranial wound | Finding site | False | Structure of cranial epidural space | Inferred relationship | Existential restriction modifier | 1 | 
| Extradural hemorrhage following injury with open intracranial wound AND brief loss of consciousness (less than one hour) | Finding site | False | Structure of cranial epidural space | Inferred relationship | Existential restriction modifier | 1 | 
| Extradural hemorrhage following injury without open intracranial wound AND with brief loss of consciousness (less than one hour) | Finding site | False | Structure of cranial epidural space | Inferred relationship | Existential restriction modifier | 1 | 
| Extradural hemorrhage following injury with open intracranial wound AND moderate loss of consciousness (1-24 hours) | Finding site | False | Structure of cranial epidural space | Inferred relationship | Existential restriction modifier | 2 | 
| Non-traumatic extradural intracranial hematoma | Finding site | False | Structure of cranial epidural space | Inferred relationship | Existential restriction modifier | 1 | 
| Extradural hemorrhage following injury without open intracranial wound AND with no loss of consciousness | Finding site | False | Structure of cranial epidural space | Inferred relationship | Existential restriction modifier | 4 | 
| Extradural hemorrhage following injury without open intracranial wound AND with prolonged loss of consciousness (more than 24 hours) without return to pre-existing conscious level | Finding site | False | Structure of cranial epidural space | Inferred relationship | Existential restriction modifier | 4 | 
| Extradural intracranial hemorrhage in fetus or newborn | Finding site | False | Structure of cranial epidural space | Inferred relationship | Existential restriction modifier | 3 | 
| Structure of extradural space of brain | Is a | False | Structure of cranial epidural space | Inferred relationship | Existential restriction modifier |  | 
| Traumatic intracranial extradural hematoma | Finding site | False | Structure of cranial epidural space | Inferred relationship | Existential restriction modifier | 2 | 
| Non-traumatic extradural intracranial hematoma | Finding site | False | Structure of cranial epidural space | Inferred relationship | Existential restriction modifier | 2 | 
| Traumatic extradural hematoma without open intracranial wound | Finding site | False | Structure of cranial epidural space | Inferred relationship | Existential restriction modifier | 4 | 
| Traumatic extradural hematoma with open intracranial wound | Finding site | False | Structure of cranial epidural space | Inferred relationship | Existential restriction modifier | 4 | 
| Nontraumatic extradural intracranial hemorrhage | Finding site | False | Structure of cranial epidural space | Inferred relationship | Existential restriction modifier | 3 | 
| Epidural intracranial hematoma | Finding site | False | Structure of cranial epidural space | Inferred relationship | Existential restriction modifier | 2 | 
| Epidural intracranial hemorrhage | Finding site | False | Structure of cranial epidural space | Inferred relationship | Existential restriction modifier | 2 | 
| Traumatic extradural hematoma with open intracranial wound | Finding site | False | Structure of cranial epidural space | Inferred relationship | Existential restriction modifier | 4 | 
| Extradural hemorrhage following injury without open intracranial wound AND with no loss of consciousness | Finding site | False | Structure of cranial epidural space | Inferred relationship | Existential restriction modifier | 3 | 
| Extradural hemorrhage following injury without open intracranial wound AND with prolonged loss of consciousness (more than 24 hours) without return to pre-existing conscious level | Finding site | False | Structure of cranial epidural space | Inferred relationship | Existential restriction modifier | 3 | 
| Traumatic hemorrhage of intracranial epidural space due to birth trauma | Finding site | False | Structure of cranial epidural space | Inferred relationship | Existential restriction modifier | 3 | 
| Traumatic hemorrhage of intracranial epidural space due to birth trauma | Finding site | False | Structure of cranial epidural space | Inferred relationship | Existential restriction modifier | 4 |