| Inbound Relationships | Type | Active | Source | Characteristic | Refinability | Group | 
| Squamous cell carcinoma of lung | Associated morphology | True | Squamous cell carcinoma (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Squamous cell carcinoma of lung, TNM stage 1 (disorder) | Associated morphology | True | Squamous cell carcinoma (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Squamous cell carcinoma of lung, TNM stage 2 (disorder) | Associated morphology | True | Squamous cell carcinoma (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Squamous cell carcinoma of lung, TNM stage 3 (disorder) | Associated morphology | True | Squamous cell carcinoma (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Squamous cell carcinoma of lung, TNM stage 4 (disorder) | Associated morphology | True | Squamous cell carcinoma (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Squamous cell carcinoma in post-traumatic skin lesion (morphologic abnormality) | Is a | True | Squamous cell carcinoma (morphologic abnormality) | Inferred relationship | Some |  | 
| Metaplastic squamous cell carcinoma (morphologic abnormality) | Is a | True | Squamous cell carcinoma (morphologic abnormality) | Inferred relationship | Some |  | 
| Squamous cell carcinoma of bronchus in left lower lobe | Associated morphology | True | Squamous cell carcinoma (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Squamous cell carcinoma of bronchus in left upper lobe | Associated morphology | True | Squamous cell carcinoma (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Squamous cell carcinoma of bronchus in right lower lobe | Associated morphology | True | Squamous cell carcinoma (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Squamous cell carcinoma of bronchus in right middle lobe | Associated morphology | True | Squamous cell carcinoma (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Squamous cell carcinoma of bronchus in right upper lobe | Associated morphology | True | Squamous cell carcinoma (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Squamous cell carcinoma of left lung (disorder) | Associated morphology | True | Squamous cell carcinoma (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Squamous cell carcinoma of right lung (disorder) | Associated morphology | True | Squamous cell carcinoma (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Human papillomavirus positive squamous cell carcinoma (morphologic abnormality) | Is a | True | Squamous cell carcinoma (morphologic abnormality) | Inferred relationship | Some |  | 
| Human papillomavirus negative squamous cell carcinoma | Is a | True | Squamous cell carcinoma (morphologic abnormality) | Inferred relationship | Some |  | 
| Primary squamous cell carcinoma of lower lobe of left lung | Associated morphology | True | Squamous cell carcinoma (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Primary squamous cell carcinoma of lower lobe of right lung | Associated morphology | True | Squamous cell carcinoma (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Primary squamous cell carcinoma of middle lobe of right lung (disorder) | Associated morphology | True | Squamous cell carcinoma (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Primary squamous cell carcinoma of upper lobe of right lung | Associated morphology | True | Squamous cell carcinoma (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Primary squamous cell carcinoma of upper lobe of left lung (disorder) | Associated morphology | True | Squamous cell carcinoma (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Squamous cell carcinoma in situ of skin caused by sunlight (disorder) | Associated morphology | True | Squamous cell carcinoma (morphologic abnormality) | Inferred relationship | Some | 1 | 
| PUVA therapy-associated squamous cell carcinoma | Associated morphology | True | Squamous cell carcinoma (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Squamous cell carcinoma, spindle cell | Is a | True | Squamous cell carcinoma (morphologic abnormality) | Inferred relationship | Some |  | 
| Squamous cell carcinoma, microinvasive | Is a | True | Squamous cell carcinoma (morphologic abnormality) | Inferred relationship | Some |  | 
| Adenoid squamous cell carcinoma | Is a | True | Squamous cell carcinoma (morphologic abnormality) | Inferred relationship | Some |  | 
| Squamous cell carcinoma, small cell, nonkeratinizing | Is a | True | Squamous cell carcinoma (morphologic abnormality) | Inferred relationship | Some |  | 
| Papillary squamous cell carcinoma | Is a | True | Squamous cell carcinoma (morphologic abnormality) | Inferred relationship | Some |  | 
| Squamous cell carcinoma, large cell, nonkeratinizing | Is a | True | Squamous cell carcinoma (morphologic abnormality) | Inferred relationship | Some |  | 
| Squamous cell carcinoma, keratinizing | Is a | True | Squamous cell carcinoma (morphologic abnormality) | Inferred relationship | Some |  | 
| Squamous cell carcinoma with horn formation | Is a | True | Squamous cell carcinoma (morphologic abnormality) | Inferred relationship | Some |  | 
| Basaloid squamous cell carcinoma (morphologic abnormality) | Is a | True | Squamous cell carcinoma (morphologic abnormality) | Inferred relationship | Some |  | 
| Squamous cell carcinoma, clear cell type | Is a | True | Squamous cell carcinoma (morphologic abnormality) | Inferred relationship | Some |  | 
| Primary squamous cell carcinoma of naris (disorder) | Associated morphology | True | Squamous cell carcinoma (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Squamous cell carcinoma of bronchus | Associated morphology | True | Squamous cell carcinoma (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Squamous cell carcinoma of liver and intrahepatic biliary tract | Associated morphology | True | Squamous cell carcinoma (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Squamous cell carcinoma of small intestine (disorder) | Associated morphology | True | Squamous cell carcinoma (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Squamous cell carcinoma of gallbladder and extrahepatic biliary tract | Associated morphology | True | Squamous cell carcinoma (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Squamous cell carcinoma of rectum | Associated morphology | True | Squamous cell carcinoma (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Squamous cell carcinoma of stomach | Associated morphology | True | Squamous cell carcinoma (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Squamous cell carcinoma of colon (disorder) | Associated morphology | True | Squamous cell carcinoma (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Primary squamous cell carcinoma of overlapping sites of male genital organ (disorder) | Associated morphology | True | Squamous cell carcinoma (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Primary squamous cell carcinoma of overlapping sites of accessory sinuses (disorder) | Associated morphology | True | Squamous cell carcinoma (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Primary squamous cell carcinoma of upper third of esophagus (disorder) | Associated morphology | True | Squamous cell carcinoma (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Primary squamous cell carcinoma of middle third of esophagus (disorder) | Associated morphology | True | Squamous cell carcinoma (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Primary squamous cell carcinoma of lower third of esophagus (disorder) | Associated morphology | True | Squamous cell carcinoma (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Primary squamous cell carcinoma of overlapping sites of esophagus (disorder) | Associated morphology | True | Squamous cell carcinoma (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Primary squamous cell carcinoma of ear (disorder) | Associated morphology | True | Squamous cell carcinoma (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Primary squamous cell carcinoma of pharyngeal tonsil (disorder) | Associated morphology | True | Squamous cell carcinoma (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Primary squamous cell carcinoma of anal canal (disorder) | Associated morphology | True | Squamous cell carcinoma (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Primary squamous cell carcinoma of lacrimal apparatus (disorder) | Associated morphology | True | Squamous cell carcinoma (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Primary squamous cell carcinoma of base of tongue (disorder) | Associated morphology | True | Squamous cell carcinoma (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Primary squamous cell carcinoma of lingual tonsil (disorder) | Associated morphology | True | Squamous cell carcinoma (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Primary squamous cell carcinoma of parotid gland (disorder) | Associated morphology | True | Squamous cell carcinoma (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Primary squamous cell carcinoma of middle ear (disorder) | Associated morphology | True | Squamous cell carcinoma (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Primary squamous cell carcinoma of vagina (disorder) | Associated morphology | True | Squamous cell carcinoma (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Primary squamous cell carcinoma of nasal cavity (disorder) | Associated morphology | True | Squamous cell carcinoma (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Primary squamous cell carcinoma of anus (disorder) | Associated morphology | True | Squamous cell carcinoma (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Primary squamous cell carcinoma of overlapping sites of urinary organs | Associated morphology | True | Squamous cell carcinoma (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Primary squamous cell carcinoma of paraurethral gland | Associated morphology | True | Squamous cell carcinoma (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Primary squamous cell carcinoma of left ear (disorder) | Associated morphology | True | Squamous cell carcinoma (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Primary squamous cell carcinoma of skin of left lower limb (disorder) | Associated morphology | True | Squamous cell carcinoma (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Primary squamous cell carcinoma of right ear (disorder) | Associated morphology | True | Squamous cell carcinoma (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Primary squamous cell carcinoma of skin of right lower limb (disorder) | Associated morphology | True | Squamous cell carcinoma (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Primary squamous cell carcinoma of submandibular gland | Associated morphology | True | Squamous cell carcinoma (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Primary squamous cell carcinoma of sublingual gland | Associated morphology | True | Squamous cell carcinoma (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Primary squamous cell carcinoma of oral cavity (disorder) | Associated morphology | True | Squamous cell carcinoma (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Primary squamous cell carcinoma of lip (disorder) | Associated morphology | True | Squamous cell carcinoma (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Primary squamous cell carcinoma of pharynx (disorder) | Associated morphology | True | Squamous cell carcinoma (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Primary squamous cell carcinoma of intrathoracic organ | Associated morphology | True | Squamous cell carcinoma (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Primary squamous cell carcinoma of respiratory system (disorder) | Associated morphology | True | Squamous cell carcinoma (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Primary squamous cell carcinoma of endometrium (disorder) | Associated morphology | True | Squamous cell carcinoma (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Pseudovascular squamous cell carcinoma (morphologic abnormality) | Is a | True | Squamous cell carcinoma (morphologic abnormality) | Inferred relationship | Some |  | 
| Primary squamous cell carcinoma of palatine tonsil | Associated morphology | True | Squamous cell carcinoma (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Primary squamous cell carcinoma of upper limb | Associated morphology | True | Squamous cell carcinoma (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Primary squamous cell carcinoma of accessory sinus | Associated morphology | True | Squamous cell carcinoma (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Primary squamous cell carcinoma of maxillary sinus | Associated morphology | True | Squamous cell carcinoma (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Primary squamous cell carcinoma of sphenoidal sinus | Associated morphology | True | Squamous cell carcinoma (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Primary squamous cell carcinoma of frontal sinus (disorder) | Associated morphology | True | Squamous cell carcinoma (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Primary squamous cell carcinoma of laryngeal cartilage (disorder) | Associated morphology | True | Squamous cell carcinoma (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Primary squamous cell carcinoma of larynx (disorder) | Associated morphology | True | Squamous cell carcinoma (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Primary squamous cell carcinoma of ethmoidal sinus (disorder) | Associated morphology | True | Squamous cell carcinoma (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Primary squamous cell carcinoma of trachea | Associated morphology | True | Squamous cell carcinoma (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Primary squamous cell carcinoma of hypopharynx (disorder) | Associated morphology | True | Squamous cell carcinoma (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Primary squamous cell carcinoma of nasopharynx (disorder) | Associated morphology | True | Squamous cell carcinoma (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Primary squamous cell carcinoma of posterior wall of oropharynx | Associated morphology | True | Squamous cell carcinoma (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Primary squamous cell carcinoma of lateral wall of oropharynx | Associated morphology | True | Squamous cell carcinoma (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Primary squamous cell carcinoma of anterior surface of epiglottis | Associated morphology | True | Squamous cell carcinoma (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Primary squamous cell carcinoma of vallecula (disorder) | Associated morphology | True | Squamous cell carcinoma (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Primary squamous cell carcinoma of supraglottis | Associated morphology | True | Squamous cell carcinoma (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Primary squamous cell carcinoma of subglottis (disorder) | Associated morphology | True | Squamous cell carcinoma (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Primary squamous cell carcinoma of glottis (disorder) | Associated morphology | True | Squamous cell carcinoma (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Primary squamous cell carcinoma of posterior wall of hypopharynx (disorder) | Associated morphology | True | Squamous cell carcinoma (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Primary squamous cell carcinoma of hypopharyngeal aspect of aryepiglottic fold (disorder) | Associated morphology | True | Squamous cell carcinoma (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Primary squamous cell carcinoma of postcricoid region (disorder) | Associated morphology | True | Squamous cell carcinoma (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Primary squamous cell carcinoma of pyriform sinus (disorder) | Associated morphology | True | Squamous cell carcinoma (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Primary squamous cell carcinoma of chest wall | Associated morphology | True | Squamous cell carcinoma (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Primary squamous cell carcinoma of thymus | Associated morphology | True | Squamous cell carcinoma (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Primary squamous cell carcinoma of urethra (disorder) | Associated morphology | True | Squamous cell carcinoma (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Primary squamous cell carcinoma of vermilion border of lip | Associated morphology | True | Squamous cell carcinoma (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Primary squamous cell carcinoma of branchial cleft | Associated morphology | True | Squamous cell carcinoma (morphologic abnormality) | Inferred relationship | Some | 1 |