| Inbound Relationships | Type | Active | Source | Characteristic | Refinability | Group | 
| Malignant neoplasm of other site of heart, thymus and mediastinum | Associated morphology | False | Malignant Neoplasm (Morphology) | Inferred relationship | Some | 1 | 
| Malignant neoplasm of heart, thymus and mediastinum NOS | Associated morphology | False | Malignant Neoplasm (Morphology) | Inferred relationship | Some | 2 | 
| Malignant neoplasm of other and ill-defined sites within the respiratory and intrathoracic organs | Associated morphology | False | Malignant Neoplasm (Morphology) | Inferred relationship | Some | 2 | 
| Malignant neoplasm of upper respiratory tract, part unspecified | Associated morphology | False | Malignant Neoplasm (Morphology) | Inferred relationship | Some | 2 | 
| Malignant neoplasm of other site of respiratory tract | Associated morphology | False | Malignant Neoplasm (Morphology) | Inferred relationship | Some | 2 | 
| Malignant neoplasm of respiratory tract NOS | Associated morphology | False | Malignant Neoplasm (Morphology) | Inferred relationship | Some | 1 | 
| [X]Malignant neoplasm of respiratory and intrathoracic organs | Associated morphology | False | Malignant Neoplasm (Morphology) | Inferred relationship | Some | 1 | 
| [X]Malignant neoplasm of ill-defined sites within the respiratory system | Associated morphology | False | Malignant Neoplasm (Morphology) | Inferred relationship | Some | 2 | 
| Ca trachea/bronchus/lung NOS | Associated morphology | False | Malignant Neoplasm (Morphology) | Inferred relationship | Some | 1 | 
| Malignant neoplasm of lip, unspecified | Associated morphology | False | Malignant Neoplasm (Morphology) | Inferred relationship | Some | 1 | 
| Malignant neoplasm of tongue, tip and lateral border | Associated morphology | False | Malignant Neoplasm (Morphology) | Inferred relationship | Some | 2 | 
| Malignant neoplasm of dorsum of tongue NOS | Associated morphology | False | Malignant Neoplasm (Morphology) | Inferred relationship | Some | 2 | 
| Local recurrence of malignant tumour of tongue | Associated morphology | False | Malignant Neoplasm (Morphology) | Inferred relationship | Some | 2 | 
| Malignant neoplasm of connective and soft tissue of head, face and neck | Associated morphology | False | Malignant Neoplasm (Morphology) | Inferred relationship | Some | 2 | 
| Malignant neoplasm of connective and soft tissue of popliteal space | Associated morphology | False | Malignant Neoplasm (Morphology) | Inferred relationship | Some | 2 | 
| Malignant neoplasm of scapula and long bones of upper arm | Associated morphology | False | Malignant Neoplasm (Morphology) | Inferred relationship | Some | 1 | 
| Malignant neoplasm of humerus | Associated morphology | False | Malignant Neoplasm (Morphology) | Inferred relationship | Some | 2 | 
| Malignant neoplasm of scapula and long bones of upper arm NOS | Associated morphology | False | Malignant Neoplasm (Morphology) | Inferred relationship | Some | 2 | 
| Metastasis to thymus of unknown primary | Associated morphology | False | Malignant Neoplasm (Morphology) | Inferred relationship | Some | 1 | 
| Primary malignant neoplasm of scapula | Associated morphology | False | Malignant Neoplasm (Morphology) | Inferred relationship | Some | 3 | 
| Secondary malignant neoplasm of thymus | Associated morphology | False | Malignant Neoplasm (Morphology) | Inferred relationship | Some | 2 | 
| Malignant tumour of upper buccal sulcus | Associated morphology | False | Malignant Neoplasm (Morphology) | Inferred relationship | Some | 2 | 
| Malignant tumour of lower buccal sulcus | Associated morphology | False | Malignant Neoplasm (Morphology) | Inferred relationship | Some | 1 | 
| Malignant tumour of upper labial sulcus | Associated morphology | False | Malignant Neoplasm (Morphology) | Inferred relationship | Some | 2 | 
| Malignant neoplasm of olfactory bulb | Associated morphology | False | Malignant Neoplasm (Morphology) | Inferred relationship | Some | 1 | 
| Malignant tumour of anterior pillar of fauces | Associated morphology | False | Malignant Neoplasm (Morphology) | Inferred relationship | Some | 2 | 
| Malignant tumour of lip | Associated morphology | False | Malignant Neoplasm (Morphology) | Inferred relationship | Some | 2 | 
| Malignant tumour of floor of mouth | Associated morphology | False | Malignant Neoplasm (Morphology) | Inferred relationship | Some | 1 | 
| Carcinoma of upper buccal sulcus | Associated morphology | False | Malignant Neoplasm (Morphology) | Inferred relationship | Some | 2 | 
| Malignant neoplasm of trachea, bronchus and lung | Associated morphology | False | Malignant Neoplasm (Morphology) | Inferred relationship | Some | 2 | 
| Malignant neoplasm of thymus, heart and mediastinum | Associated morphology | False | Malignant Neoplasm (Morphology) | Inferred relationship | Some | 1 | 
| Malignant neoplasm of midline of tongue | Associated morphology | False | Malignant Neoplasm (Morphology) | Inferred relationship | Some | 1 | 
| Malignant tumour of sublingual gland | Associated morphology | False | Malignant Neoplasm (Morphology) | Inferred relationship | Some | 2 | 
| Malignant tumor of tympanic cavity | Associated morphology | False | Malignant Neoplasm (Morphology) | Inferred relationship | Some | 2 | 
| Malignant tumour of junctional zone of tongue | Associated morphology | False | Malignant Neoplasm (Morphology) | Inferred relationship | Some | 1 | 
| Malignant tumour of anterior floor of mouth | Associated morphology | False | Malignant Neoplasm (Morphology) | Inferred relationship | Some | 3 | 
| Malignant tumour of submandibular gland | Associated morphology | False | Malignant Neoplasm (Morphology) | Inferred relationship | Some | 2 | 
| Malignant tumour of tongue | Associated morphology | False | Malignant Neoplasm (Morphology) | Inferred relationship | Some | 1 | 
| Malignant neoplasm of nasal cavities, middle ear and accessory sinuses | Associated morphology | False | Malignant Neoplasm (Morphology) | Inferred relationship | Some | 2 | 
| Malignant neoplasm of retrocaecal tissue | Associated morphology | False | Malignant Neoplasm (Morphology) | Inferred relationship | Some | 2 | 
| Malignant tumour of lingual tonsil | Associated morphology | False | Malignant Neoplasm (Morphology) | Inferred relationship | Some | 1 | 
| Malignant tumour of lateral floor of mouth | Associated morphology | False | Malignant Neoplasm (Morphology) | Inferred relationship | Some | 3 | 
| Malignant tumour of optic nerve and sheath | Associated morphology | False | Malignant Neoplasm (Morphology) | Inferred relationship | Some | 1 | 
| Malignant neoplasm of connective and soft tissue of inguinal region | Associated morphology | False | Malignant Neoplasm (Morphology) | Inferred relationship | Some | 1 | 
| Malignant tumour of branchial cleft | Associated morphology | False | Malignant Neoplasm (Morphology) | Inferred relationship | Some | 1 | 
| Malignant epithelial neoplasm - category | Is a | False | Malignant Neoplasm (Morphology) | Inferred relationship | Some |  | 
| Malignant nerve sheath tumour - category | Is a | False | Malignant Neoplasm (Morphology) | Inferred relationship | Some |  | 
| Squamous cell carcinoma - category | Is a | False | Malignant Neoplasm (Morphology) | Inferred relationship | Some |  | 
| Malignant fibromatous neoplasm | Is a | False | Malignant Neoplasm (Morphology) | Inferred relationship | Some |  | 
| Malignant neoplasm with eccrine differentiation | Is a | False | Malignant Neoplasm (Morphology) | Inferred relationship | Some |  | 
| Malignant neoplasm with apocrine differentiation | Is a | False | Malignant Neoplasm (Morphology) | Inferred relationship | Some |  | 
| Squamous cell carcinoma of vulva | Associated morphology | False | Malignant Neoplasm (Morphology) | Inferred relationship | Some | 2 | 
| Primary malignant neoplasm of lingual tonsil | Associated morphology | False | Malignant Neoplasm (Morphology) | Inferred relationship | Some | 1 | 
| Malignant melanoma of forehead | Associated morphology | False | Malignant Neoplasm (Morphology) | Inferred relationship | Some | 2 | 
| Malignant neoplasm, overlapping lesion of bladder | Associated morphology | False | Malignant Neoplasm (Morphology) | Inferred relationship | Some | 1 | 
| Carcinoma of labial frenulum | Associated morphology | False | Malignant Neoplasm (Morphology) | Inferred relationship | Some | 2 | 
| Carcinoma of lingual tonsil | Associated morphology | False | Malignant Neoplasm (Morphology) | Inferred relationship | Some | 3 | 
| Carcinoma of midline of tongue | Associated morphology | False | Malignant Neoplasm (Morphology) | Inferred relationship | Some | 1 | 
| Primary malignant neoplasm of ovary and other uterine adnexa | Associated morphology | False | Malignant Neoplasm (Morphology) | Inferred relationship | Some | 1 | 
| Carcinoma of ovary and other uterine adnexa | Associated morphology | False | Malignant Neoplasm (Morphology) | Inferred relationship | Some | 1 | 
| Extrauterine adenocarcinoma | Associated morphology | False | Malignant Neoplasm (Morphology) | Inferred relationship | Some |  | 
| Malignant tumour of prostate | Associated morphology | False | Malignant Neoplasm (Morphology) | Inferred relationship | Some | 1 | 
| Malignant tumour of urinary bladder | Associated morphology | False | Malignant Neoplasm (Morphology) | Inferred relationship | Some | 1 | 
| Malignant vascular tumour of skin | Associated morphology | False | Malignant Neoplasm (Morphology) | Inferred relationship | Some | 1 | 
| Malignant neoplasm of subcutaneous fibrous tissue | Associated morphology | False | Malignant Neoplasm (Morphology) | Inferred relationship | Some | 1 | 
| Primary malignant neoplasm of skin due to psoralen and longwave ultraviolet radiation therapy | Associated morphology | False | Malignant Neoplasm (Morphology) | Inferred relationship | Some | 1 | 
| Arsenic-induced skin malignancy | Associated morphology | False | Malignant Neoplasm (Morphology) | Inferred relationship | Some | 1 | 
| Squamous cell carcinoma of vulva due to lichen sclerosus | Associated morphology | False | Malignant Neoplasm (Morphology) | Inferred relationship | Some | 2 | 
| Trichilemmal carcinoma | Associated morphology | False | Malignant Neoplasm (Morphology) | Inferred relationship | Some | 2 | 
| Mixed eccrine/pilar adnexal carcinoma of skin | Associated morphology | False | Malignant Neoplasm (Morphology) | Inferred relationship | Some | 2 | 
| Undifferentiated adnexal carcinoma of skin | Associated morphology | False | Malignant Neoplasm (Morphology) | Inferred relationship | Some | 2 | 
| Epithelioid leiomyosarcoma of skin | Associated morphology | False | Malignant Neoplasm (Morphology) | Inferred relationship | Some | 1 | 
| Myxoid leiomyosarcoma of skin | Associated morphology | False | Malignant Neoplasm (Morphology) | Inferred relationship | Some | 2 | 
| Cutaneous leiomyosarcoma with granular cell change | Associated morphology | False | Malignant Neoplasm (Morphology) | Inferred relationship | Some | 2 | 
| Carcinosarcoma of skin | Associated morphology | False | Malignant Neoplasm (Morphology) | Inferred relationship | Some | 1 | 
| Low-grade fibromyxoid sarcoma | Associated morphology | False | Malignant Neoplasm (Morphology) | Inferred relationship | Some | 1 | 
| Extrarenal rhabdoid tumour | Associated morphology | False | Malignant Neoplasm (Morphology) | Inferred relationship | Some | 1 | 
| Malignant histiocytosis involving skin | Associated morphology | False | Malignant Neoplasm (Morphology) | Inferred relationship | Some | 1 | 
| Malignant tumour of lip | Associated morphology | False | Malignant Neoplasm (Morphology) | Inferred relationship | Some | 1 | 
| Malignant neoplasm of lip unspecified, frenulum | Associated morphology | False | Malignant Neoplasm (Morphology) | Inferred relationship | Some | 2 | 
| Malignant neoplasm of upper respiratory tract, part unspecified | Associated morphology | False | Malignant Neoplasm (Morphology) | Inferred relationship | Some | 2 | 
| Malignant tumour of floor of mouth | Associated morphology | False | Malignant Neoplasm (Morphology) | Inferred relationship | Some | 1 | 
| Carcinoma of upper buccal sulcus | Associated morphology | False | Malignant Neoplasm (Morphology) | Inferred relationship | Some | 2 | 
| Malignant neoplasm of lip unspecified, inner aspect | Associated morphology | False | Malignant Neoplasm (Morphology) | Inferred relationship | Some | 2 | 
| Malignant neoplasm of trachea, bronchus and lung | Associated morphology | False | Malignant Neoplasm (Morphology) | Inferred relationship | Some | 1 | 
| Malignant neoplasm of thymus, heart and mediastinum | Associated morphology | False | Malignant Neoplasm (Morphology) | Inferred relationship | Some | 1 | 
| Malignant neoplasm of other sites of floor of mouth | Associated morphology | False | Malignant Neoplasm (Morphology) | Inferred relationship | Some | 2 | 
| Malignant neoplasm of other sites of lip | Associated morphology | False | Malignant Neoplasm (Morphology) | Inferred relationship | Some | 2 | 
| Malignant tumour of upper labial sulcus | Associated morphology | False | Malignant Neoplasm (Morphology) | Inferred relationship | Some | 1 | 
| Malignant neoplasm of vermilion border of lip unspecified | Associated morphology | False | Malignant Neoplasm (Morphology) | Inferred relationship | Some | 2 | 
| Malignant neoplasm of other site of heart, thymus and mediastinum | Associated morphology | False | Malignant Neoplasm (Morphology) | Inferred relationship | Some | 1 | 
| Malignant neoplasm of midline of tongue | Associated morphology | False | Malignant Neoplasm (Morphology) | Inferred relationship | Some | 1 | 
| Malignant tumour of upper buccal sulcus | Associated morphology | False | Malignant Neoplasm (Morphology) | Inferred relationship | Some | 1 | 
| Malignant tumour of sublingual gland | Associated morphology | False | Malignant Neoplasm (Morphology) | Inferred relationship | Some | 1 | 
| Malignant neoplasm of connective and soft tissue of popliteal space | Associated morphology | False | Malignant Neoplasm (Morphology) | Inferred relationship | Some | 1 | 
| Malignant neoplasm of tongue, tip and lateral border | Associated morphology | False | Malignant Neoplasm (Morphology) | Inferred relationship | Some | 2 | 
| Malignant tumor of tympanic cavity | Associated morphology | False | Malignant Neoplasm (Morphology) | Inferred relationship | Some | 1 | 
| Malignant tumour of junctional zone of tongue | Associated morphology | False | Malignant Neoplasm (Morphology) | Inferred relationship | Some | 1 | 
| Malignant neoplasm of cerebral arachnoid mater | Associated morphology | False | Malignant Neoplasm (Morphology) | Inferred relationship | Some | 2 | 
| Malignant neoplasm of olfactory bulb | Associated morphology | False | Malignant Neoplasm (Morphology) | Inferred relationship | Some | 1 | 
| Malignant tumour of anterior pillar of fauces | Associated morphology | False | Malignant Neoplasm (Morphology) | Inferred relationship | Some | 1 |