| Inbound Relationships | Type | Active | Source | Characteristic | Refinability | Group | 
| Malignant tumor of adrenal medulla | Pathological process | False | Malignant neoplastic process | Inferred relationship | Some |  | 
| Malignant tumour of parathyroid gland | Pathological process | False | Malignant neoplastic process | Inferred relationship | Some |  | 
| Malignant tumor of pituitary gland | Pathological process | False | Malignant neoplastic process | Inferred relationship | Some |  | 
| Malignant tumour of pineal gland | Pathological process | False | Malignant neoplastic process | Inferred relationship | Some |  | 
| Malignant tumor of pelvis | Pathological process | False | Malignant neoplastic process | Inferred relationship | Some |  | 
| Malignant tumour of minor salivary gland | Pathological process | False | Malignant neoplastic process | Inferred relationship | Some |  | 
| Malignant tumor of vocal cord | Pathological process | False | Malignant neoplastic process | Inferred relationship | Some |  | 
| Malignant tumor of aryepiglottic fold - laryngeal aspect | Pathological process | False | Malignant neoplastic process | Inferred relationship | Some |  | 
| Malignant tumor of false cord | Pathological process | False | Malignant neoplastic process | Inferred relationship | Some |  | 
| Malignant tumour of neck | Pathological process | False | Malignant neoplastic process | Inferred relationship | Some |  | 
| Malignant tumor of anus | Pathological process | False | Malignant neoplastic process | Inferred relationship | Some |  | 
| Malignant tumour of cloacogenic zone | Pathological process | False | Malignant neoplastic process | Inferred relationship | Some |  | 
| Malignant tumor of peritoneum | Pathological process | False | Malignant neoplastic process | Inferred relationship | Some |  | 
| Malignant tumour of bronchus | Pathological process | False | Malignant neoplastic process | Inferred relationship | Some |  | 
| Malignant tumour of mediastinum | Pathological process | False | Malignant neoplastic process | Inferred relationship | Some |  | 
| Malignant tumour of muscle | Pathological process | False | Malignant neoplastic process | Inferred relationship | Some |  | 
| Malignant tumor of soft tissue of abdomen | Pathological process | False | Malignant neoplastic process | Inferred relationship | Some |  | 
| Malignant tumour of meninges | Pathological process | False | Malignant neoplastic process | Inferred relationship | Some |  | 
| Malignant tumor of optic nerve | Pathological process | False | Malignant neoplastic process | Inferred relationship | Some |  | 
| Malignant tumour of spleen | Pathological process | False | Malignant neoplastic process | Inferred relationship | Some |  | 
| Multiple malignancy | Pathological process | False | Malignant neoplastic process | Inferred relationship | Some |  | 
| Malignant tumor of face | Pathological process | False | Malignant neoplastic process | Inferred relationship | Some |  | 
| Malignant tumour of axilla | Pathological process | False | Malignant neoplastic process | Inferred relationship | Some |  | 
| Malignant tumor of upper limb | Pathological process | False | Malignant neoplastic process | Inferred relationship | Some |  | 
| Malignant tumour of lower limb | Pathological process | False | Malignant neoplastic process | Inferred relationship | Some |  | 
| Malignant tumour of oral cavity | Pathological process | False | Malignant neoplastic process | Inferred relationship | Some |  | 
| Malignant tumour of nasal sinuses | Pathological process | False | Malignant neoplastic process | Inferred relationship | Some |  | 
| Malignant tumor of pharynx | Pathological process | False | Malignant neoplastic process | Inferred relationship | Some |  | 
| Malignant tumour of intestine | Pathological process | False | Malignant neoplastic process | Inferred relationship | Some |  | 
| Malignant tumor of small intestine | Pathological process | False | Malignant neoplastic process | Inferred relationship | Some |  | 
| Malignant tumour of large intestine | Pathological process | False | Malignant neoplastic process | Inferred relationship | Some |  | 
| Malignant tumour of female genital organ | Pathological process | False | Malignant neoplastic process | Inferred relationship | Some |  | 
| Malignant tumor of male genital organ | Pathological process | False | Malignant neoplastic process | Inferred relationship | Some |  | 
| Malignant tumour of penis | Pathological process | False | Malignant neoplastic process | Inferred relationship | Some |  | 
| Malignant tumor of urinary tract proper (disorder) | Pathological process | False | Malignant neoplastic process | Inferred relationship | Some |  | 
| Malignant tumour of kidney | Pathological process | False | Malignant neoplastic process | Inferred relationship | Some |  | 
| HIV disease resulting in Kaposi's sarcoma | Pathological process | False | Malignant neoplastic process | Inferred relationship | Some |  | 
| Human immunodeficiency virus disease resulting in multiple malignant neoplasms | Pathological process | False | Malignant neoplastic process | Inferred relationship | Some |  | 
| Human immunodeficiency virus disease resulting in lymphoid interstitial pneumonitis | Pathological process | False | Malignant neoplastic process | Inferred relationship | Some |  | 
| Malignant neoplasm of upper lip, external | Pathological process | False | Malignant neoplastic process | Inferred relationship | Some |  | 
| Malignant neoplasm of upper lip, lipstick area | Pathological process | False | Malignant neoplastic process | Inferred relationship | Some |  | 
| Malignant neoplasm of lower lip, external | Pathological process | False | Malignant neoplastic process | Inferred relationship | Some |  | 
| Malignant tumour of upper labial mucosa | Pathological process | False | Malignant neoplastic process | Inferred relationship | Some |  | 
| Malignant neoplasm of upper lip, buccal aspect | Pathological process | False | Malignant neoplastic process | Inferred relationship | Some |  | 
| Malignant tumour of fraenum of upper lip | Pathological process | False | Malignant neoplastic process | Inferred relationship | Some |  | 
| Malignant neoplasm of lower lip, buccal aspect | Pathological process | False | Malignant neoplastic process | Inferred relationship | Some |  | 
| Malignant tumor of frenum of lower lip | Pathological process | False | Malignant neoplastic process | Inferred relationship | Some |  | 
| Malignant neoplasm of lower lip, mucosa | Pathological process | False | Malignant neoplastic process | Inferred relationship | Some |  | 
| Malignant tumor of labial mucosa | Pathological process | False | Malignant neoplastic process | Inferred relationship | Some |  | 
| Malignant neoplasm of overlapping lesion of lip | Pathological process | False | Malignant neoplastic process | Inferred relationship | Some |  | 
| Malignant neoplasm of base of tongue dorsal surface | Pathological process | False | Malignant neoplastic process | Inferred relationship | Some | 1 | 
| Malignant neoplasm of midline of tongue | Pathological process | False | Malignant neoplastic process | Inferred relationship | Some |  | 
| Malignant neoplasm of tongue, tip and lateral border | Pathological process | False | Malignant neoplastic process | Inferred relationship | Some |  | 
| Malignant tumor of frenum linguae | Pathological process | False | Malignant neoplastic process | Inferred relationship | Some |  | 
| Malignant tumour of junctional zone of tongue | Pathological process | False | Malignant neoplastic process | Inferred relationship | Some |  | 
| Malignant neoplasm, overlapping lesion of major salivary glands | Pathological process | False | Malignant neoplastic process | Inferred relationship | Some |  | 
| Malignant tumour of anterior floor of mouth | Pathological process | False | Malignant neoplastic process | Inferred relationship | Some |  | 
| Malignant tumor of lateral floor of mouth | Pathological process | False | Malignant neoplastic process | Inferred relationship | Some |  | 
| Malignant neoplasm, overlapping lesion of floor of mouth | Pathological process | False | Malignant neoplastic process | Inferred relationship | Some |  | 
| Malignant tumour of vestibule of mouth | Pathological process | False | Malignant neoplastic process | Inferred relationship | Some |  | 
| Malignant neoplasm of junction of hard and soft palate | Pathological process | False | Malignant neoplastic process | Inferred relationship | Some |  | 
| Malignant neoplasm of faucial tonsil | Pathological process | False | Malignant neoplastic process | Inferred relationship | Some |  | 
| Malignant neoplasm of palatine tonsil | Pathological process | False | Malignant neoplastic process | Inferred relationship | Some |  | 
| Malignant neoplasm of overlapping lesion of tonsil | Pathological process | False | Malignant neoplastic process | Inferred relationship | Some |  | 
| Malignant tumour of tonsillar pillar | Pathological process | False | Malignant neoplastic process | Inferred relationship | Some |  | 
| Malignant tumor of glossopalatine fold | Pathological process | False | Malignant neoplastic process | Inferred relationship | Some |  | 
| Malignant neoplasm of anterior epiglottis (disorder) | Pathological process | False | Malignant neoplastic process | Inferred relationship | Some |  | 
| Malignant neoplasm of epiglottis, free border | Pathological process | False | Malignant neoplastic process | Inferred relationship | Some |  | 
| Malignant neoplasm of glossoepiglottic fold | Pathological process | False | Malignant neoplastic process | Inferred relationship | Some |  | 
| Malignant neoplasm of junctional region of epiglottis | Pathological process | False | Malignant neoplastic process | Inferred relationship | Some |  | 
| Malignant tumor of posterior wall of oropharynx | Pathological process | False | Malignant neoplastic process | Inferred relationship | Some |  | 
| Malignant tumour of posterior wall of nasopharynx | Pathological process | False | Malignant neoplastic process | Inferred relationship | Some |  | 
| Malignant tumor of adenoid | Pathological process | False | Malignant neoplastic process | Inferred relationship | Some |  | 
| Malignant tumor of opening of auditory tube | Pathological process | False | Malignant neoplastic process | Inferred relationship | Some |  | 
| Malignant tumor of anterior wall of nasopharynx | Pathological process | False | Malignant neoplastic process | Inferred relationship | Some |  | 
| Malignant neoplasm of floor of nasopharynx | Pathological process | False | Malignant neoplastic process | Inferred relationship | Some |  | 
| maligne neoplasma van nasofaryngeaal oppervlak van palatum molle (aandoening) | Pathological process | False | Malignant neoplastic process | Inferred relationship | Some |  | 
| Malignant tumor posterior margin nasal septum and choanae | Pathological process | False | Malignant neoplastic process | Inferred relationship | Some | 1 | 
| Malignant neoplasm, overlapping lesion of nasopharynx | Pathological process | False | Malignant neoplastic process | Inferred relationship | Some |  | 
| Malignant tumor aryepiglottic fold - hypopharyngeal aspect | Pathological process | False | Malignant neoplastic process | Inferred relationship | Some |  | 
| Malignant neoplasm of posterior pharynx | Pathological process | False | Malignant neoplastic process | Inferred relationship | Some |  | 
| Malignant neoplasm, overlapping lesion of hypopharynx | Pathological process | False | Malignant neoplastic process | Inferred relationship | Some |  | 
| Malignant tumour of Waldeyer's ring | Pathological process | False | Malignant neoplastic process | Inferred relationship | Some |  | 
| Malignant tumour of cervical part of oesophagus | Pathological process | False | Malignant neoplastic process | Inferred relationship | Some |  | 
| Malignant tumor of thoracic part of esophagus | Pathological process | False | Malignant neoplastic process | Inferred relationship | Some |  | 
| Malignant tumour of abdominal part of oesophagus | Pathological process | False | Malignant neoplastic process | Inferred relationship | Some |  | 
| Malignant tumor of upper third of esophagus | Pathological process | False | Malignant neoplastic process | Inferred relationship | Some |  | 
| Malignant tumor of middle third of esophagus | Pathological process | False | Malignant neoplastic process | Inferred relationship | Some |  | 
| Malignant tumour of lower third of oesophagus | Pathological process | False | Malignant neoplastic process | Inferred relationship | Some |  | 
| Malignant neoplasm, overlapping lesion of esophagus | Pathological process | False | Malignant neoplastic process | Inferred relationship | Some |  | 
| Malignant tumor of cardia | Pathological process | False | Malignant neoplastic process | Inferred relationship | Some |  | 
| Malignant neoplasm of cardiac orifice of stomach | Pathological process | False | Malignant neoplastic process | Inferred relationship | Some |  | 
| Malignant neoplasm of cardio-esophageal junction of stomach | Pathological process | False | Malignant neoplastic process | Inferred relationship | Some |  | 
| Malignant tumor of pylorus | Pathological process | False | Malignant neoplastic process | Inferred relationship | Some |  | 
| Malignant neoplasm of prepylorus of stomach | Pathological process | False | Malignant neoplastic process | Inferred relationship | Some |  | 
| Malignant neoplasm of pyloric canal of stomach | Pathological process | False | Malignant neoplastic process | Inferred relationship | Some |  | 
| Malignant tumor of pyloric antrum | Pathological process | False | Malignant neoplastic process | Inferred relationship | Some |  | 
| Malignant tumour of fundus of stomach | Pathological process | False | Malignant neoplastic process | Inferred relationship | Some |  | 
| Malignant tumor of body of stomach | Pathological process | False | Malignant neoplastic process | Inferred relationship | Some |  | 
| Malignant neoplasm, overlapping lesion of stomach | Pathological process | False | Malignant neoplastic process | Inferred relationship | Some |  | 
| Malignant neoplasm of small intestine and duodenum | Pathological process | False | Malignant neoplastic process | Inferred relationship | Some |  |