T-staging
Tumor size and local extent assessment component of TNM cancer staging system.
Full Definition
T-staging refers to the assessment of tumor size and local extent as part of the TNM classification system for cancer staging. The T category describes the size and local invasion characteristics of the primary tumor, ranging from T0 (no evidence of primary tumor) to T4 (extensive local invasion). T-staging criteria are tumor-specific and rely heavily on imaging findings including tumor dimensions, organ involvement, and relationship to critical structures. Accurate T-staging is fundamental for treatment planning, prognosis assessment, and clinical trial enrollment. Radiologists must be familiar with organ-specific T-staging criteria to provide clinically relevant assessments.
Usage
Usage note: Hyphenate when used as an adjective or gerund.
In Context
- "Based on imaging findings, the lung cancer was classified as T2a due to tumor size exceeding 3 cm." — Staging report
- "T-staging revealed invasion of the adjacent chest wall, upgrading the lesion to T3." — Multidisciplinary conference