| Outbound Relationships | Type | Target | Active | Characteristic | Refinability | Group | Values | 
| Preauricular sinus, pit or fistula | Is a | Congenital anomaly of face | false | Inferred relationship | Existential restriction modifier |  |  | 
| Preauricular sinus, pit or fistula | Is a | Congenital anomaly of integument | false | Inferred relationship | Existential restriction modifier |  |  | 
| Preauricular sinus, pit or fistula | Is a | Congenital abnormality of external ear | false | Inferred relationship | Existential restriction modifier |  |  | 
| Preauricular sinus, pit or fistula | Occurrence | Congenital | false | Inferred relationship | Existential restriction modifier |  |  | 
| Preauricular sinus, pit or fistula | Finding site | Skin structure of preauricular region | false | Inferred relationship | Existential restriction modifier |  |  | 
| Preauricular sinus, pit or fistula | Is a | Disorder of skin | false | Inferred relationship | Existential restriction modifier |  |  | 
| Preauricular sinus, pit or fistula | Is a | Disorder of skin AND/OR subcutaneous tissue of head | false | Inferred relationship | Existential restriction modifier |  |  | 
| Preauricular sinus, pit or fistula | Is a | Disorder of skin of head | false | Inferred relationship | Existential restriction modifier |  |  | 
| Preauricular sinus, pit or fistula | Is a | Disorder of face | false | Inferred relationship | Existential restriction modifier |  |  | 
| Preauricular sinus, pit or fistula | Is a | Congenital anomaly of neck | false | Inferred relationship | Existential restriction modifier |  |  | 
| Preauricular sinus, pit or fistula | Is a | Disorder of head | false | Inferred relationship | Existential restriction modifier |  |  | 
| Preauricular sinus, pit or fistula | Associated morphology | Congenital anomaly | false | Inferred relationship | Existential restriction modifier | 1 |  | 
| Preauricular sinus, pit or fistula | Finding site | Preauricular region structure | false | Inferred relationship | Existential restriction modifier | 1 |  | 
| Preauricular sinus, pit or fistula | Finding site | Neck structure | false | Inferred relationship | Existential restriction modifier | 1 |  | 
| Preauricular sinus, pit or fistula | Due to | Developmental malformation of branchial arch | false | Inferred relationship | Existential restriction modifier |  |  | 
| Preauricular sinus, pit or fistula | Associated morphology | Congenital anomaly | false | Inferred relationship | Existential restriction modifier | 1 |  | 
| Preauricular sinus, pit or fistula | Finding site | Neck structure | false | Inferred relationship | Existential restriction modifier | 1 |  | 
| Preauricular sinus, pit or fistula | Is a | Congenital anomaly of head | false | Inferred relationship | Existential restriction modifier |  |  | 
| Preauricular sinus, pit or fistula | Is a | Ear, face and neck congenital anomalies | false | Inferred relationship | Existential restriction modifier |  |  | 
| Preauricular sinus, pit or fistula | Finding site | Preauricular region structure | false | Inferred relationship | Existential restriction modifier | 1 |  | 
| Preauricular sinus, pit or fistula | Associated morphology | Congenital anomaly | false | Inferred relationship | Existential restriction modifier | 1 |  | 
| Preauricular sinus, pit or fistula | Is a | Finding of head region | false | Inferred relationship | Existential restriction modifier |  |  | 
| Preauricular sinus, pit or fistula | Occurrence | Congenital | false | Inferred relationship | Existential restriction modifier | 2 |  | 
| Preauricular sinus, pit or fistula | Associated morphology | Developmental anomaly | false | Inferred relationship | Existential restriction modifier | 2 |  | 
| Preauricular sinus, pit or fistula | Finding site | Face structure | false | Inferred relationship | Existential restriction modifier | 2 |  | 
| Preauricular sinus, pit or fistula | Occurrence | Congenital | false | Inferred relationship | Existential restriction modifier | 3 |  | 
| Preauricular sinus, pit or fistula | Associated morphology | Developmental anomaly | false | Inferred relationship | Existential restriction modifier | 3 |  | 
| Preauricular sinus, pit or fistula | Occurrence | Congenital | false | Inferred relationship | Existential restriction modifier | 4 |  | 
| Preauricular sinus, pit or fistula | Associated morphology | Developmental anomaly | false | Inferred relationship | Existential restriction modifier | 4 |  | 
| Preauricular sinus, pit or fistula | Finding site | Neck structure | false | Inferred relationship | Existential restriction modifier | 3 |  | 
| Preauricular sinus, pit or fistula | Finding site | Ear structure | false | Inferred relationship | Existential restriction modifier | 4 |  |