| Inbound Relationships | Type | Active | Source | Characteristic | Refinability | Group | 
| Retinoblastoma, undifferentiated | Is a | True | Malignant neuroendocrine neoplasm, neural | Inferred relationship | Existential restriction modifier |  | 
| Retinoblastoma, diffuse | Is a | True | Malignant neuroendocrine neoplasm, neural | Inferred relationship | Existential restriction modifier |  | 
| Retinoblastoma | Is a | True | Malignant neuroendocrine neoplasm, neural | Inferred relationship | Existential restriction modifier |  | 
| Retinoblastoma, differentiated | Is a | True | Malignant neuroendocrine neoplasm, neural | Inferred relationship | Existential restriction modifier |  | 
| Malignant pheochromocytoma | Is a | True | Malignant neuroendocrine neoplasm, neural | Inferred relationship | Existential restriction modifier |  | 
| Pineoblastoma | Is a | True | Malignant neuroendocrine neoplasm, neural | Inferred relationship | Existential restriction modifier |  | 
| Primitive neuroectodermal tumor | Is a | True | Malignant neuroendocrine neoplasm, neural | Inferred relationship | Existential restriction modifier |  | 
| Esthesioneuroepithelioma | Is a | True | Malignant neuroendocrine neoplasm, neural | Inferred relationship | Existential restriction modifier |  | 
| Esthesioneuroblastoma | Is a | True | Malignant neuroendocrine neoplasm, neural | Inferred relationship | Existential restriction modifier |  | 
| Medulloblastoma, no International Classification of Diseases for Oncology subtype | Is a | False | Malignant neuroendocrine neoplasm, neural | Inferred relationship | Existential restriction modifier |  | 
| Neuroblastoma | Is a | True | Malignant neuroendocrine neoplasm, neural | Inferred relationship | Existential restriction modifier |  | 
| Paraganglioma, malignant | Is a | True | Malignant neuroendocrine neoplasm, neural | Inferred relationship | Existential restriction modifier |  | 
| Medulloblastoma - category | Is a | False | Malignant neuroendocrine neoplasm, neural | Inferred relationship | Existential restriction modifier |  | 
| Composite pheochromocytoma | Is a | True | Malignant neuroendocrine neoplasm, neural | Inferred relationship | Existential restriction modifier |  | 
| Composite paraganglioma | Is a | True | Malignant neuroendocrine neoplasm, neural | Inferred relationship | Existential restriction modifier |  | 
| Medulloblastoma | Is a | True | Malignant neuroendocrine neoplasm, neural | Inferred relationship | Existential restriction modifier |  |