| Inbound Relationships | Type | Active | Source | Characteristic | Refinability | Group | 
| Malignant histiocytic neoplasm - category | Is a | False | Malignant hematopoietic neoplasm | Inferred relationship | Existential restriction modifier |  | 
| Leukemia - category | Is a | False | Malignant hematopoietic neoplasm | Inferred relationship | Existential restriction modifier |  | 
| Myelodysplastic syndrome | Is a | True | Malignant hematopoietic neoplasm | Inferred relationship | Existential restriction modifier |  | 
| Burkitt lymphoma/leukemia | Is a | True | Malignant hematopoietic neoplasm | Inferred relationship | Existential restriction modifier |  | 
| Fibrosarcoma of spleen | Associated morphology | False | Malignant hematopoietic neoplasm | Inferred relationship | Existential restriction modifier | 2 | 
| Mast cell malignancy of lymph nodes of head and neck | Associated morphology | False | Malignant hematopoietic neoplasm | Inferred relationship | Existential restriction modifier | 3 | 
| Mast cell malignancy of intrathoracic lymph nodes | Associated morphology | False | Malignant hematopoietic neoplasm | Inferred relationship | Existential restriction modifier | 3 | 
| Mast cell malignancy of intra-abdominal lymph nodes | Associated morphology | False | Malignant hematopoietic neoplasm | Inferred relationship | Existential restriction modifier | 3 | 
| Mast cell malignancy of lymph nodes of axilla and upper limb | Associated morphology | False | Malignant hematopoietic neoplasm | Inferred relationship | Existential restriction modifier | 3 | 
| Mast cell malignancy of lymph nodes of inguinal region and lower limb | Associated morphology | False | Malignant hematopoietic neoplasm | Inferred relationship | Existential restriction modifier | 3 | 
| Mast cell malignancy of intrapelvic lymph nodes | Associated morphology | False | Malignant hematopoietic neoplasm | Inferred relationship | Existential restriction modifier | 3 | 
| Malignant mast cell sarcoma of spleen | Associated morphology | False | Malignant hematopoietic neoplasm | Inferred relationship | Existential restriction modifier | 2 | 
| Mast cell malignancy of lymph nodes of multiple sites | Associated morphology | False | Malignant hematopoietic neoplasm | Inferred relationship | Existential restriction modifier | 3 | 
| Malignant immunoproliferative disease | Associated morphology | False | Malignant hematopoietic neoplasm | Inferred relationship | Existential restriction modifier | 2 | 
| Essential thrombocythemia | Associated morphology | True | Malignant hematopoietic neoplasm | Inferred relationship | Existential restriction modifier | 4 | 
| Malignant tumor of lymphoid, hemopoietic AND/OR related tissue | Associated morphology | True | Malignant hematopoietic neoplasm | Inferred relationship | Existential restriction modifier | 1 | 
| Malignant mast cell tumor | Associated morphology | False | Malignant hematopoietic neoplasm | Inferred relationship | Existential restriction modifier | 3 | 
| Malignant mast cell tumor of intra-abdominal lymph nodes | Associated morphology | False | Malignant hematopoietic neoplasm | Inferred relationship | Existential restriction modifier | 3 | 
| Malignant mast cell tumor of intrapelvic lymph nodes | Associated morphology | False | Malignant hematopoietic neoplasm | Inferred relationship | Existential restriction modifier | 3 | 
| Malignant mast cell tumor of intrathoracic lymph nodes | Associated morphology | False | Malignant hematopoietic neoplasm | Inferred relationship | Existential restriction modifier | 3 | 
| Malignant mast cell tumor of lymph nodes of axilla AND/OR upper limb | Associated morphology | False | Malignant hematopoietic neoplasm | Inferred relationship | Existential restriction modifier | 3 | 
| Malignant mast cell tumor of lymph nodes of head, face AND/OR neck | Associated morphology | False | Malignant hematopoietic neoplasm | Inferred relationship | Existential restriction modifier | 3 | 
| Malignant mast cell tumor of lymph nodes of inguinal region AND/OR lower limb | Associated morphology | False | Malignant hematopoietic neoplasm | Inferred relationship | Existential restriction modifier | 3 | 
| Malignant mast cell tumor of lymph nodes of multiple sites | Associated morphology | False | Malignant hematopoietic neoplasm | Inferred relationship | Existential restriction modifier | 3 | 
| Malignant mast cell tumor of spleen | Associated morphology | False | Malignant hematopoietic neoplasm | Inferred relationship | Existential restriction modifier | 3 | 
| Malignant mast cell tumor of extranodal AND/OR solid organ site | Associated morphology | False | Malignant hematopoietic neoplasm | Inferred relationship | Existential restriction modifier | 3 | 
| Primary malignant neoplasm of spleen | Associated morphology | False | Malignant hematopoietic neoplasm | Inferred relationship | Existential restriction modifier | 2 | 
| Malignant mast cell tumors | Associated morphology | False | Malignant hematopoietic neoplasm | Inferred relationship | Existential restriction modifier | 3 | 
| Mast cell malignancy of unspecified site | Associated morphology | False | Malignant hematopoietic neoplasm | Inferred relationship | Existential restriction modifier |  | 
| Malignant mast cell tumor NOS | Associated morphology | False | Malignant hematopoietic neoplasm | Inferred relationship | Existential restriction modifier |  | 
| Malignant neoplasm of lymphatic or hematopoietic tissue otherwise specified | Associated morphology | False | Malignant hematopoietic neoplasm | Inferred relationship | Existential restriction modifier |  | 
| Malignant neoplasm lymphatic or hematopoietic tissue NOS | Associated morphology | False | Malignant hematopoietic neoplasm | Inferred relationship | Existential restriction modifier |  | 
| [X]Malignant neoplasms of lymphoid, hematopoietic and related tissue | Associated morphology | False | Malignant hematopoietic neoplasm | Inferred relationship | Existential restriction modifier |  | 
| [X]Other malignant immunoproliferative diseases | Associated morphology | False | Malignant hematopoietic neoplasm | Inferred relationship | Existential restriction modifier |  | 
| [X]Other specified malignant neoplasms of lymphoid, hematopoietic and related tissue | Associated morphology | False | Malignant hematopoietic neoplasm | Inferred relationship | Existential restriction modifier |  | 
| [X]Malignant neoplasm of lymphoid, hematopoietic and related tissue, unspecified | Associated morphology | False | Malignant hematopoietic neoplasm | Inferred relationship | Existential restriction modifier |  | 
| Aggressive lymphadenopathic mastocytosis with eosinophilia | Associated morphology | False | Malignant hematopoietic neoplasm | Inferred relationship | Existential restriction modifier |  | 
| Mast cell malignancy | Associated morphology | False | Malignant hematopoietic neoplasm | Inferred relationship | Existential restriction modifier | 3 | 
| Mast cell malignancy of lymph nodes | Associated morphology | False | Malignant hematopoietic neoplasm | Inferred relationship | Existential restriction modifier | 3 | 
| Systemic mastocytosis with associated clonal hematological non-mast cell lineage disease | Associated morphology | False | Malignant hematopoietic neoplasm | Inferred relationship | Existential restriction modifier | 3 | 
| Malignant lymphoma - category | Is a | False | Malignant hematopoietic neoplasm | Inferred relationship | Existential restriction modifier |  | 
| Bovine viral leukosis | Associated morphology | False | Malignant hematopoietic neoplasm | Inferred relationship | Existential restriction modifier |  | 
| Polymorphic post transplant lymphoproliferative disorder | Is a | False | Malignant hematopoietic neoplasm | Inferred relationship | Existential restriction modifier |  | 
| Inherited predisposition to essential thrombocythemia | Associated morphology | False | Malignant hematopoietic neoplasm | Inferred relationship | Existential restriction modifier |  | 
| Myeloid or lymphoid neoplasm with alpha-type platelet-derived growth factor receptor gene rearrangement | Is a | True | Malignant hematopoietic neoplasm | Inferred relationship | Existential restriction modifier |  | 
| Myeloid and/or lymphoid neoplasm with pericentriolar material 1-janus kinase 2 | Is a | True | Malignant hematopoietic neoplasm | Inferred relationship | Existential restriction modifier |  | 
| Leukemia | Is a | True | Malignant hematopoietic neoplasm | Inferred relationship | Existential restriction modifier |  | 
| Malignant lymphoma | Is a | True | Malignant hematopoietic neoplasm | Inferred relationship | Existential restriction modifier |  | 
| Malignant histiocytic neoplasm | Is a | True | Malignant hematopoietic neoplasm | Inferred relationship | Existential restriction modifier |  | 
| [X]Other malignant immunoproliferative diseases | Associated morphology | False | Malignant hematopoietic neoplasm | Inferred relationship | Existential restriction modifier |  | 
| [X]Malignant neoplasm of lymphoid, haematopoietic and related tissue, unspecified | Associated morphology | False | Malignant hematopoietic neoplasm | Inferred relationship | Existential restriction modifier |  | 
| [X]Malignant neoplasms of lymphoid, haematopoietic and related tissue | Associated morphology | False | Malignant hematopoietic neoplasm | Inferred relationship | Existential restriction modifier |  | 
| [X]Other specified malignant neoplasms of lymphoid, haematopoietic and related tissue | Associated morphology | False | Malignant hematopoietic neoplasm | Inferred relationship | Existential restriction modifier |  | 
| Mast cell malignancy of unspecified site | Associated morphology | False | Malignant hematopoietic neoplasm | Inferred relationship | Existential restriction modifier |  | 
| Malignant neoplasm of lymphatic or hematopoietic tissue otherwise specified (disorder) | Associated morphology | False | Malignant hematopoietic neoplasm | Inferred relationship | Existential restriction modifier |  | 
| Malignant neoplasm lymphatic or hematopoietic tissue NOS (disorder) | Associated morphology | False | Malignant hematopoietic neoplasm | Inferred relationship | Existential restriction modifier |  | 
| Malignant mast cell tumor NOS (disorder) | Associated morphology | False | Malignant hematopoietic neoplasm | Inferred relationship | Existential restriction modifier |  |