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]
Precambrian Relatively little is known about the Precambrian, despite it making up roughly seven-eighths of the Earth's history, and what is known has largely been discovered from the 1960s onwards. The Precambrian fossil record is poorer than that of the succeeding Phanerozoic, and fossils from the Precambrian (e.g. stromatolites) are of limited biostratigraphic use.[1] This is because many Precambrian rocks have been heavily metamorphosed, obscuring their origins, while others have been destroyed by erosion, or remain deeply buried beneath Phanerozoic strata.[1][2][3]