ascites is one of the late features of
Ascites In the developed world, the most common cause is liver cirrhosis.[3] Other causes include cancer, heart failure, tuberculosis, pancreatitis, and blockage of the hepatic vein.[3] In cirrhosis, the underlying mechanism involves high blood pressure in the portal system and dysfunction of blood vessels.[3] Diagnosis is typically based on a examination together with ultrasound or a CT scan.[2] Testing the fluid can help in determining the underlying cause.[2]
Stratovolcano Stratovolcanoes are common at subduction zones, forming chains along plate tectonic boundaries where oceanic crust is drawn under continental crust (continental arc volcanism, e.g. Cascade Range, central Andes) or another oceanic plate (island arc volcanism, e.g. Japan, Aleutian Islands). The magma forming stratovolcanoes rises when water trapped both in hydrated minerals and in the porous basalt rock of the upper oceanic crust is released into mantle rock of the asthenosphere above the sinking oceanic slab. The release of water from hydrated minerals is termed "dewatering", and occurs at specific pressures and temperatures for each mineral, as the plate descends to greater depths. The water freed from the rock lowers the melting point of the overlying mantle rock, which then undergoes partial melting and rises due to its lighter density relative to the surrounding mantle rock, and pools temporarily at the base of the lithosphere. The magma then rises through the crust, incorporating silica-rich crustal rock, leading to a final intermediate composition. When the magma nears the top surface, it pools in a magma chamber under or within the volcano.