The governing equations are the continuity equation and the non-dimensional Euler equations, which are given by. In a research note, Euler Hermes warned that the impact of capital controls was likely to be long-lasting. It will also allow Euler Hermes to enhance its presence in Abu Dhabi.
Therefore GISTs are rated not as benign or malignant but rather on a risk scale of low risk to high risk. Even small GISTs that looked benign have been known to act aggressively later. GIST spreads by shedding GIST cells from the tumor into the blood stream, and these stray cells end up in locations like the liver.
1 A benign tumor is not cancer, does not spread, can usually be completely removed, is not likely to recur and does not usually present a serious threat to health.  A malignant tumor is cancer, and can invade neighbouring tissue and organs through blood or lymph system (this is the system which helps fight infection). This is called metastasis and can start new or secondary cancers.