Pathologic Stage
Cancer staging determination based on histopathologic examination of surgically resected tissue specimens.
Full Definition
The definitive staging assessment performed after surgical resection and histopathologic evaluation of the primary tumor and removed lymph nodes, providing the most accurate determination of disease extent. Pathologic staging (designated with a 'p' prefix, such as pT2N1M0) incorporates direct tissue examination findings including tumor size, depth of invasion, lymph node involvement, and microscopic features not assessable by imaging alone. This staging method is considered more precise than clinical staging for determining prognosis and guiding adjuvant therapy decisions. Pathologic staging may upstage or downstage disease compared to preoperative clinical assessments and requires adequate tissue sampling and expert pathologic interpretation. It forms the basis for definitive treatment planning and risk stratification in most solid tumors.
Usage
Usage note: Always prefixed with lowercase 'p' to distinguish from clinical staging; components may be written as pT, pN, pM.
In Context
- "Final pathologic stage was pT3N2M0, indicating locally advanced disease with nodal involvement." — Surgical pathology report
- "Pathologic stage differed from clinical stage due to additional lymph node metastases found on histology." — Multidisciplinary conference notes