| Inbound Relationships | Type | Active | Source | Characteristic | Refinability | Group | 
| [M]Squamous cell carcinoma NOS | Is a | False | Squamous cell carcinoma, no International Classification of Diseases for Oncology subtype | Inferred relationship | Existential restriction modifier |  | 
| Malignant tumor of renal calyx | Associated morphology | False | Squamous cell carcinoma, no International Classification of Diseases for Oncology subtype | Inferred relationship | Existential restriction modifier |  | 
| Malignant tumor of pelviureteric junction | Associated morphology | False | Squamous cell carcinoma, no International Classification of Diseases for Oncology subtype | Inferred relationship | Existential restriction modifier |  | 
| Squamous cell carcinoma of scrotum | Associated morphology | False | Squamous cell carcinoma, no International Classification of Diseases for Oncology subtype | Inferred relationship | Existential restriction modifier | 1 | 
| Squamous cell carcinoma of buccal mucosa | Associated morphology | False | Squamous cell carcinoma, no International Classification of Diseases for Oncology subtype | Inferred relationship | Existential restriction modifier | 1 | 
| Squamous cell carcinoma of trachea | Associated morphology | False | Squamous cell carcinoma, no International Classification of Diseases for Oncology subtype | Inferred relationship | Existential restriction modifier | 1 | 
| Squamous cell carcinoma of lung | Associated morphology | False | Squamous cell carcinoma, no International Classification of Diseases for Oncology subtype | Inferred relationship | Existential restriction modifier | 1 | 
| Squamous cell carcinoma of skin | Associated morphology | False | Squamous cell carcinoma, no International Classification of Diseases for Oncology subtype | Inferred relationship | Existential restriction modifier | 2 | 
| Clear cell squamous cell carcinoma of skin | Associated morphology | False | Squamous cell carcinoma, no International Classification of Diseases for Oncology subtype | Inferred relationship | Existential restriction modifier | 2 | 
| Spindle cell squamous carcinoma of skin | Associated morphology | False | Squamous cell carcinoma, no International Classification of Diseases for Oncology subtype | Inferred relationship | Existential restriction modifier | 2 | 
| Acantholytic squamous cell carcinoma of skin | Associated morphology | False | Squamous cell carcinoma, no International Classification of Diseases for Oncology subtype | Inferred relationship | Existential restriction modifier | 2 | 
| Plantar verrucous carcinoma | Associated morphology | False | Squamous cell carcinoma, no International Classification of Diseases for Oncology subtype | Inferred relationship | Existential restriction modifier | 2 | 
| Squamous cell carcinoma of vulva | Associated morphology | False | Squamous cell carcinoma, no International Classification of Diseases for Oncology subtype | Inferred relationship | Existential restriction modifier | 1 | 
| Squamous cell carcinoma of conjunctiva | Associated morphology | False | Squamous cell carcinoma, no International Classification of Diseases for Oncology subtype | Inferred relationship | Existential restriction modifier | 1 | 
| Squamous cell carcinoma of cornea | Associated morphology | False | Squamous cell carcinoma, no International Classification of Diseases for Oncology subtype | Inferred relationship | Existential restriction modifier | 1 | 
| Squamous cell carcinoma of lip | Associated morphology | False | Squamous cell carcinoma, no International Classification of Diseases for Oncology subtype | Inferred relationship | Existential restriction modifier | 4 | 
| Squamous cell carcinoma of bladder | Associated morphology | False | Squamous cell carcinoma, no International Classification of Diseases for Oncology subtype | Inferred relationship | Existential restriction modifier | 1 | 
| Squamous cell carcinoma of gum | Associated morphology | False | Squamous cell carcinoma, no International Classification of Diseases for Oncology subtype | Inferred relationship | Existential restriction modifier | 1 | 
| Squamous cell carcinoma of palate | Associated morphology | False | Squamous cell carcinoma, no International Classification of Diseases for Oncology subtype | Inferred relationship | Existential restriction modifier | 1 | 
| Carcinoma of larynx | Associated morphology | False | Squamous cell carcinoma, no International Classification of Diseases for Oncology subtype | Inferred relationship | Existential restriction modifier | 1 | 
| Squamous cell carcinoma of skin of upper lip | Associated morphology | False | Squamous cell carcinoma, no International Classification of Diseases for Oncology subtype | Inferred relationship | Existential restriction modifier | 1 | 
| Squamous cell carcinoma of skin of lower lip | Associated morphology | False | Squamous cell carcinoma, no International Classification of Diseases for Oncology subtype | Inferred relationship | Existential restriction modifier | 1 | 
| Squamous cell carcinoma of skin of cheek | Associated morphology | False | Squamous cell carcinoma, no International Classification of Diseases for Oncology subtype | Inferred relationship | Existential restriction modifier | 1 | 
| Squamous cell carcinoma of mouth | Associated morphology | False | Squamous cell carcinoma, no International Classification of Diseases for Oncology subtype | Inferred relationship | Existential restriction modifier | 1 | 
| Bowen's disease of eyelid | Associated morphology | False | Squamous cell carcinoma, no International Classification of Diseases for Oncology subtype | Inferred relationship | Existential restriction modifier | 4 | 
| Squamous cell carcinoma of eyelid | Associated morphology | False | Squamous cell carcinoma, no International Classification of Diseases for Oncology subtype | Inferred relationship | Existential restriction modifier | 1 | 
| Squamous cell carcinoma of bronchus | Associated morphology | False | Squamous cell carcinoma, no International Classification of Diseases for Oncology subtype | Inferred relationship | Existential restriction modifier | 3 | 
| Squamous cell carcinoma in situ of skin | Associated morphology | False | Squamous cell carcinoma, no International Classification of Diseases for Oncology subtype | Inferred relationship | Existential restriction modifier | 3 | 
| Squamous cell carcinoma of cervix | Associated morphology | False | Squamous cell carcinoma, no International Classification of Diseases for Oncology subtype | Inferred relationship | Existential restriction modifier | 1 | 
| Squamous cell carcinoma of anal margin | Associated morphology | False | Squamous cell carcinoma, no International Classification of Diseases for Oncology subtype | Inferred relationship | Existential restriction modifier | 2 | 
| Squamous cell carcinoma of esophagus | Associated morphology | False | Squamous cell carcinoma, no International Classification of Diseases for Oncology subtype | Inferred relationship | Existential restriction modifier | 1 | 
| Squamous cell carcinoma of tongue | Associated morphology | False | Squamous cell carcinoma, no International Classification of Diseases for Oncology subtype | Inferred relationship | Existential restriction modifier | 1 | 
| Squamous cell carcinoma of floor of mouth | Associated morphology | False | Squamous cell carcinoma, no International Classification of Diseases for Oncology subtype | Inferred relationship | Existential restriction modifier | 1 | 
| Bowen's disease of vulva | Associated morphology | False | Squamous cell carcinoma, no International Classification of Diseases for Oncology subtype | Inferred relationship | Existential restriction modifier | 3 | 
| Squamous cell carcinoma of bronchus in left lower lobe | Associated morphology | False | Squamous cell carcinoma, no International Classification of Diseases for Oncology subtype | Inferred relationship | Existential restriction modifier | 1 | 
| Squamous cell carcinoma of bronchus in left upper lobe | Associated morphology | False | Squamous cell carcinoma, no International Classification of Diseases for Oncology subtype | Inferred relationship | Existential restriction modifier | 1 | 
| Squamous cell carcinoma of bronchus in right lower lobe | Associated morphology | False | Squamous cell carcinoma, no International Classification of Diseases for Oncology subtype | Inferred relationship | Existential restriction modifier | 1 | 
| Squamous cell carcinoma of bronchus in right middle lobe | Associated morphology | False | Squamous cell carcinoma, no International Classification of Diseases for Oncology subtype | Inferred relationship | Existential restriction modifier | 1 | 
| Squamous cell carcinoma of bronchus in right upper lobe | Associated morphology | False | Squamous cell carcinoma, no International Classification of Diseases for Oncology subtype | Inferred relationship | Existential restriction modifier | 1 | 
| Bowen's disease of eyelid | Associated morphology | False | Squamous cell carcinoma, no International Classification of Diseases for Oncology subtype | Inferred relationship | Existential restriction modifier | 2 | 
| Squamous cell carcinoma in post-traumatic skin lesion | Is a | False | Squamous cell carcinoma, no International Classification of Diseases for Oncology subtype | Inferred relationship | Existential restriction modifier |  | 
| Metaplastic squamous cell carcinoma | Is a | False | Squamous cell carcinoma, no International Classification of Diseases for Oncology subtype | Inferred relationship | Existential restriction modifier |  | 
| Squamous cell carcinoma of lung, TNM stage 1 | Associated morphology | False | Squamous cell carcinoma, no International Classification of Diseases for Oncology subtype | Inferred relationship | Existential restriction modifier | 1 | 
| Squamous cell carcinoma of lung, TNM stage 2 | Associated morphology | False | Squamous cell carcinoma, no International Classification of Diseases for Oncology subtype | Inferred relationship | Existential restriction modifier | 1 | 
| Squamous cell carcinoma of lung, TNM stage 3 | Associated morphology | False | Squamous cell carcinoma, no International Classification of Diseases for Oncology subtype | Inferred relationship | Existential restriction modifier | 1 | 
| Squamous cell carcinoma of lung, TNM stage 4 | Associated morphology | False | Squamous cell carcinoma, no International Classification of Diseases for Oncology subtype | Inferred relationship | Existential restriction modifier | 1 | 
| Squamous cell carcinoma of lung, TNM stage 1 | Associated morphology | False | Squamous cell carcinoma, no International Classification of Diseases for Oncology subtype | Inferred relationship | Existential restriction modifier | 1 | 
| Squamous cell carcinoma of lung, TNM stage 3 | Associated morphology | False | Squamous cell carcinoma, no International Classification of Diseases for Oncology subtype | Inferred relationship | Existential restriction modifier | 1 | 
| Squamous cell carcinoma of lung, TNM stage 2 | Associated morphology | False | Squamous cell carcinoma, no International Classification of Diseases for Oncology subtype | Inferred relationship | Existential restriction modifier | 1 | 
| Squamous cell carcinoma of bronchus in left upper lobe | Associated morphology | False | Squamous cell carcinoma, no International Classification of Diseases for Oncology subtype | Inferred relationship | Existential restriction modifier | 1 | 
| Squamous cell carcinoma of bronchus in right upper lobe | Associated morphology | False | Squamous cell carcinoma, no International Classification of Diseases for Oncology subtype | Inferred relationship | Existential restriction modifier | 1 | 
| Squamous cell carcinoma of bronchus in right middle lobe | Associated morphology | False | Squamous cell carcinoma, no International Classification of Diseases for Oncology subtype | Inferred relationship | Existential restriction modifier | 1 | 
| Squamous cell carcinoma of bronchus in right lower lobe | Associated morphology | False | Squamous cell carcinoma, no International Classification of Diseases for Oncology subtype | Inferred relationship | Existential restriction modifier | 1 | 
| Squamous cell carcinoma of lung, TNM stage 4 | Associated morphology | False | Squamous cell carcinoma, no International Classification of Diseases for Oncology subtype | Inferred relationship | Existential restriction modifier | 1 | 
| Squamous cell carcinoma of lung | Associated morphology | False | Squamous cell carcinoma, no International Classification of Diseases for Oncology subtype | Inferred relationship | Existential restriction modifier | 1 | 
| Squamous cell carcinoma of bronchus in left lower lobe | Associated morphology | False | Squamous cell carcinoma, no International Classification of Diseases for Oncology subtype | Inferred relationship | Existential restriction modifier | 1 | 
| Overlapping squamous cell carcinoma of hypopharynx | Associated morphology | False | Squamous cell carcinoma, no International Classification of Diseases for Oncology subtype | Inferred relationship | Existential restriction modifier | 1 | 
| Overlapping squamous cell carcinoma of oropharynx | Associated morphology | False | Squamous cell carcinoma, no International Classification of Diseases for Oncology subtype | Inferred relationship | Existential restriction modifier | 1 | 
| Squamous cell carcinoma of right lung | Associated morphology | False | Squamous cell carcinoma, no International Classification of Diseases for Oncology subtype | Inferred relationship | Existential restriction modifier | 1 | 
| Squamous cell carcinoma of left lung | Associated morphology | False | Squamous cell carcinoma, no International Classification of Diseases for Oncology subtype | Inferred relationship | Existential restriction modifier | 1 | 
| Primary squamous cell carcinoma of overlapping sites of urinary organs | Associated morphology | False | Squamous cell carcinoma, no International Classification of Diseases for Oncology subtype | Inferred relationship | Existential restriction modifier | 1 | 
| Primary squamous cell carcinoma of paraurethral gland | Associated morphology | False | Squamous cell carcinoma, no International Classification of Diseases for Oncology subtype | Inferred relationship | Existential restriction modifier | 1 | 
| Primary squamous cell carcinoma of oral cavity | Associated morphology | False | Squamous cell carcinoma, no International Classification of Diseases for Oncology subtype | Inferred relationship | Existential restriction modifier | 1 | 
| Primary squamous cell carcinoma of lip | Associated morphology | False | Squamous cell carcinoma, no International Classification of Diseases for Oncology subtype | Inferred relationship | Existential restriction modifier | 1 | 
| Primary squamous cell carcinoma of pharynx | Associated morphology | False | Squamous cell carcinoma, no International Classification of Diseases for Oncology subtype | Inferred relationship | Existential restriction modifier | 1 | 
| Primary squamous cell carcinoma of intrathoracic organ | Associated morphology | False | Squamous cell carcinoma, no International Classification of Diseases for Oncology subtype | Inferred relationship | Existential restriction modifier | 1 | 
| Primary squamous cell carcinoma of respiratory system | Associated morphology | False | Squamous cell carcinoma, no International Classification of Diseases for Oncology subtype | Inferred relationship | Existential restriction modifier | 1 | 
| Primary squamous cell carcinoma of endometrium | Associated morphology | False | Squamous cell carcinoma, no International Classification of Diseases for Oncology subtype | Inferred relationship | Existential restriction modifier | 1 | 
| Primary squamous cell carcinoma of submandibular gland | Associated morphology | False | Squamous cell carcinoma, no International Classification of Diseases for Oncology subtype | Inferred relationship | Existential restriction modifier | 1 | 
| Primary squamous cell carcinoma of sublingual gland | Associated morphology | False | Squamous cell carcinoma, no International Classification of Diseases for Oncology subtype | Inferred relationship | Existential restriction modifier | 1 | 
| Human papillomavirus positive squamous cell carcinoma | Is a | False | Squamous cell carcinoma, no International Classification of Diseases for Oncology subtype | Inferred relationship | Existential restriction modifier |  | 
| Human papillomavirus negative squamous cell carcinoma | Is a | False | Squamous cell carcinoma, no International Classification of Diseases for Oncology subtype | Inferred relationship | Existential restriction modifier |  | 
| Primary squamous cell carcinoma of lower lobe of left lung | Associated morphology | False | Squamous cell carcinoma, no International Classification of Diseases for Oncology subtype | Inferred relationship | Existential restriction modifier | 1 | 
| Primary squamous cell carcinoma of lower lobe of right lung | Associated morphology | False | Squamous cell carcinoma, no International Classification of Diseases for Oncology subtype | Inferred relationship | Existential restriction modifier | 1 | 
| Primary squamous cell carcinoma of middle lobe of right lung | Associated morphology | False | Squamous cell carcinoma, no International Classification of Diseases for Oncology subtype | Inferred relationship | Existential restriction modifier | 1 | 
| Primary squamous cell carcinoma of upper lobe of left lung | Associated morphology | False | Squamous cell carcinoma, no International Classification of Diseases for Oncology subtype | Inferred relationship | Existential restriction modifier | 1 | 
| Primary squamous cell carcinoma of upper lobe of right lung | Associated morphology | False | Squamous cell carcinoma, no International Classification of Diseases for Oncology subtype | Inferred relationship | Existential restriction modifier | 1 | 
| [M]Squamous cell carcinoma NOS | Is a | False | Squamous cell carcinoma, no International Classification of Diseases for Oncology subtype | Inferred relationship | Existential restriction modifier |  |