Subcostal ascites vs pericardial effusion

Caption

What does this subcostal view show? In a twitter poll, more than 50% thought its either pericardial effusion or a pericardial tumor. The correct answer is ascites. Note the falciform ligament.

Source

https://i0.wp.com/nephropocus.com/wp-content/uploads/2020/05/subcostal-ascites-falciform.gif?ssl=1