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