Risk of Aggressive Behavior in GISTs (modified Fletcher)
2015年9月21日
| largest dimension[cm] | Mitotic count[/50HPF] | Primary tumor site | |
| Very low risk | 2.0 | ≦5 | Any |
| low risk |
2.1-5.0 | ≦5 | Any |
| intermediate risk |
≦5.0 | 6-10 | stomach |
| 5.1-10.0 | ≦5 | ||
| high risk |
Any | Any | Tumor rupture |
| >10.0 | Any | Any | |
| Any | >10 | ||
| >5.0 | >5 | ||
| ≦5.0 | >5 | Nongastric | |
| 5.1-10.0 | ≦5 |
1. Joensuu H. Risk stratification of patients diagnosed with gastrointestinal stromal tumor. Hum Pathol 2008;39:1411-9.
2. Rutkowski P, et al. Validation of the Joensuu risk criteria for primary resectable gastrointestinal stromal tumour – the impact of tumour rupture on patient outcomes. Eur J Surg Oncol 2011;37:890-6.
執筆日：2013/06/21
執筆者：神戸大学医学部附属病院病理診断科 酒井康裕
