FNCLCC Grading System

**Semantic type:** Classification

**Definition:** A three-tier grading system for adult soft tissue sarcomas, that is also utilized for pediatric non-rhabdomyosarcoma soft tissue sarcomas, which classifies metastatic risk as grade 1 (low), grade 2 (intermediate), and grade 3 (high) based on the histological parameters of tumor differentiation, necrosis extent, and mitotic count.

**Synonyms:** - French Federation of Cancer Centers Sarcoma Group Grading System - Fédération Nationale des Centres de Lutte Contre le Cancer Grading System