Lymphatic fluid that accumulates in the pleural cavity is:

Rationale: A. Pericardial effusion is the accumulation of fluid in the pericardial sac surrounding the heart, not in the pleural cavity. B. Parapneumonic pleural effusion is fluid that accumulates in the pleural space secondary to pneumonia; it is usually serous, purulent, or bloody but not specifically lymphatic. C. Pleural empyema is pus in the pleural space, typically resulting from infection, not lymphatic fluid. D. Chylothorax is the accumulation of lymphatic fluid (chyle) in the pleural cavity, usually due to trauma, obstruction, or congenital malformation of the thoracic duct. It is characterized by a milky appearance and high triglyceride content.