Introduction | Collaborative Staging System | Coding Practice | Additional Information
Primary Size Extention
"None" VS. "Unknown" | Histology-Specific Coding Schemes | Primary Size Extension | Computer Algorithm |

Primary Sites Where Tumor Size Is Required for AJCC Staging

In order to classify the T category for certain sites, it is necessary to know the size of the primary tumor, usually for T1 - T3. For the following sites and site categories, the size of the primary tumor must be recorded in order to assign the T category and derive a stage group:

Code	Site
	Lip and oral cavity	** 7 sites **
	Oropharynx	** 3 sites **
	Hypopharynx
	Major salivary glands	** 3 sites **
	Thyroid
	Anal canal
	Liver and intrahepatic bile ducts
	Pancreas	** 3 sites **
	Lung
	Bone
	Soft tissue sarcoma	** 3 sites **
	Skin