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Assessment and Plan of Treatment

Represents a health professional’s conclusions and working assumptions that will guide treatment of the patient.

Data Element

Information from the submission form

AJCC T Category
For both Clinical (cT), Pathological (pT) and Neoadjuvant (ycT or ypT), the T Category is defined as the size and/or contiguous extension of the primary tumor.

Note: The roles of the size component and the extent of contiguous spread are specifically defined for each cancer site.
Primary Tumor (T) Categories: Primary tumor categories have specific notations to describe the existence, size, or extent of the tumor.

TX: No information about the T category for the primary tumor, or it is unknown or cannot be assessed
T0: No evidence of a primary tumor
Tis: Carcinoma in situ
T1, T2, T3, or T4: Primary invasive tumor, for which a higher category generally means
• an increasing size
• an increasing local extension, or
• both


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