extent of disease
Also written as: EOD — Extent of Disease
Comprehensive assessment of tumor burden including primary site, nodal involvement, and distant metastases for surgical planning.
Full Definition
Extent of disease (EOD) encompasses the complete assessment of tumor distribution throughout the body, including the primary tumor characteristics, regional lymph node involvement, and presence of distant metastases. This evaluation is fundamental to oncologic surgery as it determines resectability, influences surgical approach, and guides perioperative treatment decisions. EOD assessment involves multiple modalities including physical examination, laboratory studies, imaging investigations, and sometimes surgical exploration. The information gathered directly impacts staging classification, prognosis determination, and treatment algorithm selection. Accurate EOD evaluation is essential for distinguishing between curative and palliative surgical interventions.
Usage
Usage note: Often abbreviated as EOD; distinguish from staging which is the formal classification system based on EOD findings.
In Context
- "Comprehensive imaging revealed the full extent of disease, influencing the surgical approach." — Preoperative assessment
- "Intraoperative findings confirmed the preoperatively assessed extent of disease." — Operative report