Tumor. A tumor may possibly maintain bile from draining out with the gallbladder because it must. This causes bile buildup that may lead to cholecystitis. Slowed blood move from lower blood pressure level. Low blood pressure level could be because of shock, coronary heart failure, selected medicines or ongoing kidney https://www.sgvascularctr.com/treatments-for-gangrene-insights-from-a-vascular-surgeon/