Dr. Abhishek Shukla explained in detail the concepts of pleural effusion and pericardial effusion, helping students understand their differences and clinical importance. Pleural effusion occurs when excess fluid accumulates in the pleural cavity, the space between the lungs and chest wall, which can compress the lungs and cause difficulty in breathing. In contrast, pericardial effusion is the accumulation of fluid in the pericardial sac surrounding the heart, which can restrict the heart’s abili