| Inbound Relationships | Type | Active | Source | Characteristic | Refinability | Group | 
| Malignant squamous tumor | Is a | True | Squamous cell carcinoma of primary, secondary, or uncertain origin | Inferred relationship | Some |  | 
| Squamous cell carcinoma, metastatic | Is a | True | Squamous cell carcinoma of primary, secondary, or uncertain origin | Inferred relationship | Some |  | 
| Adenosquamous carcinoma | Is a | True | Squamous cell carcinoma of primary, secondary, or uncertain origin | Inferred relationship | Some |  | 
| Squamous cell carcinoma of eyelid (disorder) | Associated morphology | True | Squamous cell carcinoma of primary, secondary, or uncertain origin | Inferred relationship | Some | 1 | 
| Squamous cell carcinoma of buccal mucosa | Associated morphology | True | Squamous cell carcinoma of primary, secondary, or uncertain origin | Inferred relationship | Some | 1 | 
| Squamous cell carcinoma of trachea | Associated morphology | True | Squamous cell carcinoma of primary, secondary, or uncertain origin | Inferred relationship | Some | 1 | 
| Squamous cell carcinoma of cervix | Associated morphology | True | Squamous cell carcinoma of primary, secondary, or uncertain origin | Inferred relationship | Some | 1 | 
| Squamous cell carcinoma of vulva | Associated morphology | True | Squamous cell carcinoma of primary, secondary, or uncertain origin | Inferred relationship | Some | 1 | 
| Squamous cell carcinoma of conjunctiva | Associated morphology | True | Squamous cell carcinoma of primary, secondary, or uncertain origin | Inferred relationship | Some | 1 | 
| Squamous cell carcinoma of cornea | Associated morphology | True | Squamous cell carcinoma of primary, secondary, or uncertain origin | Inferred relationship | Some | 1 | 
| Squamous cell carcinoma of lip (disorder) | Associated morphology | True | Squamous cell carcinoma of primary, secondary, or uncertain origin | Inferred relationship | Some | 1 | 
| Squamous cell carcinoma of bladder | Associated morphology | True | Squamous cell carcinoma of primary, secondary, or uncertain origin | Inferred relationship | Some | 1 | 
| Squamous cell carcinoma of scrotum | Associated morphology | True | Squamous cell carcinoma of primary, secondary, or uncertain origin | Inferred relationship | Some | 1 | 
| Squamous cell carcinoma of tongue | Associated morphology | True | Squamous cell carcinoma of primary, secondary, or uncertain origin | Inferred relationship | Some | 1 | 
| Squamous cell carcinoma of floor of mouth | Associated morphology | True | Squamous cell carcinoma of primary, secondary, or uncertain origin | Inferred relationship | Some | 1 | 
| Squamous cell carcinoma of palate | Associated morphology | True | Squamous cell carcinoma of primary, secondary, or uncertain origin | Inferred relationship | Some | 1 | 
| Squamous cell carcinoma of skin of upper lip | Associated morphology | True | Squamous cell carcinoma of primary, secondary, or uncertain origin | Inferred relationship | Some | 1 | 
| Squamous cell carcinoma of skin of lower lip (disorder) | Associated morphology | True | Squamous cell carcinoma of primary, secondary, or uncertain origin | Inferred relationship | Some | 1 | 
| Squamous cell carcinoma of skin of cheek | Associated morphology | True | Squamous cell carcinoma of primary, secondary, or uncertain origin | Inferred relationship | Some | 1 | 
| Squamous cell carcinoma of mouth | Associated morphology | True | Squamous cell carcinoma of primary, secondary, or uncertain origin | Inferred relationship | Some | 1 | 
| Squamous cell carcinoma of epiglottis (disorder) | Associated morphology | True | Squamous cell carcinoma of primary, secondary, or uncertain origin | Inferred relationship | Some | 1 | 
| Squamous cell carcinoma of pharynx (disorder) | Associated morphology | True | Squamous cell carcinoma of primary, secondary, or uncertain origin | Inferred relationship | Some | 1 | 
| Squamous cell carcinoma of bridge of nose (disorder) | Associated morphology | True | Squamous cell carcinoma of primary, secondary, or uncertain origin | Inferred relationship | Some | 1 | 
| Squamous cell carcinoma of chin (disorder) | Associated morphology | True | Squamous cell carcinoma of primary, secondary, or uncertain origin | Inferred relationship | Some | 1 | 
| Squamous cell carcinoma of back (disorder) | Associated morphology | True | Squamous cell carcinoma of primary, secondary, or uncertain origin | Inferred relationship | Some | 1 | 
| Squamous cell carcinoma of ala nasi (disorder) | Associated morphology | True | Squamous cell carcinoma of primary, secondary, or uncertain origin | Inferred relationship | Some | 1 | 
| Squamous cell carcinoma of nasopharynx (disorder) | Associated morphology | True | Squamous cell carcinoma of primary, secondary, or uncertain origin | Inferred relationship | Some | 1 | 
| Squamous cell carcinoma of skin of neck (disorder) | Associated morphology | True | Squamous cell carcinoma of primary, secondary, or uncertain origin | Inferred relationship | Some | 1 | 
| Squamous cell carcinoma of oropharynx (disorder) | Associated morphology | True | Squamous cell carcinoma of primary, secondary, or uncertain origin | Inferred relationship | Some | 1 | 
| Squamous cell carcinoma of external auditory canal (disorder) | Associated morphology | True | Squamous cell carcinoma of primary, secondary, or uncertain origin | Inferred relationship | Some | 1 | 
| Squamous cell carcinoma of auricle of ear (disorder) | Associated morphology | True | Squamous cell carcinoma of primary, secondary, or uncertain origin | Inferred relationship | Some | 1 | 
| Squamous cell carcinoma of tip of nose (disorder) | Associated morphology | True | Squamous cell carcinoma of primary, secondary, or uncertain origin | Inferred relationship | Some | 1 | 
| Squamous cell carcinoma of nasolabial fold (disorder) | Associated morphology | True | Squamous cell carcinoma of primary, secondary, or uncertain origin | Inferred relationship | Some | 1 | 
| Squamous cell carcinoma of temple (disorder) | Associated morphology | True | Squamous cell carcinoma of primary, secondary, or uncertain origin | Inferred relationship | Some | 1 | 
| Squamous cell carcinoma of skin (disorder) | Associated morphology | True | Squamous cell carcinoma of primary, secondary, or uncertain origin | Inferred relationship | Some | 1 | 
| Squamous cell carcinoma of anal margin (disorder) | Associated morphology | True | Squamous cell carcinoma of primary, secondary, or uncertain origin | Inferred relationship | Some | 1 | 
| Squamous cell carcinoma of oesophagus | Associated morphology | True | Squamous cell carcinoma of primary, secondary, or uncertain origin | Inferred relationship | Some | 1 | 
| Squamous cell carcinoma of prostate (disorder) | Associated morphology | True | Squamous cell carcinoma of primary, secondary, or uncertain origin | Inferred relationship | Some | 1 | 
| Squamous cell carcinoma (disorder) | Associated morphology | True | Squamous cell carcinoma of primary, secondary, or uncertain origin | Inferred relationship | Some | 1 | 
| Squamous cell carcinoma of anogenital area (disorder) | Associated morphology | True | Squamous cell carcinoma of primary, secondary, or uncertain origin | Inferred relationship | Some | 1 | 
| Squamous cell carcinoma of nail apparatus (disorder) | Associated morphology | True | Squamous cell carcinoma of primary, secondary, or uncertain origin | Inferred relationship | Some | 1 | 
| Squamous cell carcinoma of penis (disorder) | Associated morphology | True | Squamous cell carcinoma of primary, secondary, or uncertain origin | Inferred relationship | Some | 1 | 
| Squamous cell carcinoma of vulva due to lichen sclerosus (disorder) | Associated morphology | True | Squamous cell carcinoma of primary, secondary, or uncertain origin | Inferred relationship | Some | 1 | 
| Squamous cell carcinoma of scalp (disorder) | Associated morphology | True | Squamous cell carcinoma of primary, secondary, or uncertain origin | Inferred relationship | Some | 1 | 
| Squamous cell carcinoma of skin of face (disorder) | Associated morphology | True | Squamous cell carcinoma of primary, secondary, or uncertain origin | Inferred relationship | Some | 1 | 
| Squamous cell carcinoma of forehead (disorder) | Associated morphology | True | Squamous cell carcinoma of primary, secondary, or uncertain origin | Inferred relationship | Some | 1 | 
| Squamous cell carcinoma of skin of ear (disorder) | Associated morphology | True | Squamous cell carcinoma of primary, secondary, or uncertain origin | Inferred relationship | Some | 1 | 
| Squamous cell carcinoma of foot (disorder) | Associated morphology | True | Squamous cell carcinoma of primary, secondary, or uncertain origin | Inferred relationship | Some | 1 | 
| Squamous cell carcinoma of hand (disorder) | Associated morphology | True | Squamous cell carcinoma of primary, secondary, or uncertain origin | Inferred relationship | Some | 1 | 
| Squamous cell carcinoma of upper extremity (disorder) | Associated morphology | True | Squamous cell carcinoma of primary, secondary, or uncertain origin | Inferred relationship | Some | 1 | 
| Squamous cell carcinoma of skin of lower extremity (disorder) | Associated morphology | True | Squamous cell carcinoma of primary, secondary, or uncertain origin | Inferred relationship | Some | 1 | 
| Squamous cell carcinoma of skin of trunk (disorder) | Associated morphology | True | Squamous cell carcinoma of primary, secondary, or uncertain origin | Inferred relationship | Some | 1 | 
| Signet ring squamous cell carcinoma (disorder) | Associated morphology | True | Squamous cell carcinoma of primary, secondary, or uncertain origin | Inferred relationship | Some | 1 | 
| Multiple squamous cell carcinomata (disorder) | Associated morphology | True | Squamous cell carcinoma of primary, secondary, or uncertain origin | Inferred relationship | Some | 1 | 
| Squamous cell carcinoma of mucous membrane of lower lip (disorder) | Associated morphology | True | Squamous cell carcinoma of primary, secondary, or uncertain origin | Inferred relationship | Some | 1 | 
| Squamous cell carcinoma of mucous membrane of upper lip (disorder) | Associated morphology | True | Squamous cell carcinoma of primary, secondary, or uncertain origin | Inferred relationship | Some | 1 | 
| Squamous cell carcinoma of oral mucous membrane (disorder) | Associated morphology | True | Squamous cell carcinoma of primary, secondary, or uncertain origin | Inferred relationship | Some | 1 | 
| Excision of squamous cell carcinoma | Direct morphology | True | Squamous cell carcinoma of primary, secondary, or uncertain origin | Inferred relationship | Some | 1 | 
| Squamous cell carcinoma of exocrine pancreas | Associated morphology | True | Squamous cell carcinoma of primary, secondary, or uncertain origin | Inferred relationship | Some | 1 | 
| Squamous cell carcinoma of corpus uteri (disorder) | Associated morphology | True | Squamous cell carcinoma of primary, secondary, or uncertain origin | Inferred relationship | Some | 1 | 
| Recurrent squamous cell carcinoma (disorder) | Associated morphology | True | Squamous cell carcinoma of primary, secondary, or uncertain origin | Inferred relationship | Some | 1 | 
| Squamous cell carcinoma of head and neck (disorder) | Associated morphology | True | Squamous cell carcinoma of primary, secondary, or uncertain origin | Inferred relationship | Some | 1 | 
| Squamous cell carcinoma arising in chronic ulcer (disorder) | Associated morphology | True | Squamous cell carcinoma of primary, secondary, or uncertain origin | Inferred relationship | Some | 1 | 
| Squamous cell carcinoma of nose (disorder) | Associated morphology | True | Squamous cell carcinoma of primary, secondary, or uncertain origin | Inferred relationship | Some | 1 | 
| Squamous cell carcinoma of shoulder (disorder) | Associated morphology | True | Squamous cell carcinoma of primary, secondary, or uncertain origin | Inferred relationship | Some | 1 | 
| Squamous cell carcinoma of larynx (disorder) | Associated morphology | True | Squamous cell carcinoma of primary, secondary, or uncertain origin | Inferred relationship | Some | 1 | 
| Overlapping squamous cell carcinoma of larynx | Associated morphology | True | Squamous cell carcinoma of primary, secondary, or uncertain origin | Inferred relationship | Some | 1 | 
| Overlapping squamous cell carcinoma of laryngeal cartilage (disorder) | Associated morphology | True | Squamous cell carcinoma of primary, secondary, or uncertain origin | Inferred relationship | Some | 1 | 
| Squamous cell carcinoma of vagina | Associated morphology | True | Squamous cell carcinoma of primary, secondary, or uncertain origin | Inferred relationship | Some | 1 | 
| Overlapping squamous cell carcinoma of oropharynx (disorder) | Associated morphology | True | Squamous cell carcinoma of primary, secondary, or uncertain origin | Inferred relationship | Some | 1 | 
| Overlapping squamous cell carcinoma of hypopharynx | Associated morphology | True | Squamous cell carcinoma of primary, secondary, or uncertain origin | Inferred relationship | Some | 1 | 
| Squamous cell carcinoma of posterior wall of nasopharynx (disorder) | Associated morphology | True | Squamous cell carcinoma of primary, secondary, or uncertain origin | Inferred relationship | Some | 1 | 
| Squamous cell carcinoma of male genital (disorder) | Associated morphology | True | Squamous cell carcinoma of primary, secondary, or uncertain origin | Inferred relationship | Some | 1 | 
| Squamous cell carcinoma of gum | Associated morphology | True | Squamous cell carcinoma of primary, secondary, or uncertain origin | Inferred relationship | Some | 1 | 
| PD-L1-positive squamous cell carcinoma of head and neck (disorder) | Associated morphology | True | Squamous cell carcinoma of primary, secondary, or uncertain origin | Inferred relationship | Some | 1 |