Hepatic hydrothorax is characteristically associated with which of the following?

Hepatic hydrothorax is characteristically associated with which of the following?

• A. Left-sided pleural effusion without ascites
• B. Right-sided pleural effusion commonly with ascites
• C. Bilateral pleural effusions without liver disease
• D. Pneumothorax with pleural effusion

Answer: (B)

Hepatic hydrothorax happens when ascitic fluid from cirrhosis moves into the pleural space through small diaphragmatic defects. This process most often involves the right side, so the characteristic pattern is a right‑sided pleural effusion that occurs with ascites and liver disease. The right predominance reflects diaphragmatic anatomy and how ascitic fluid preferentially translocates into the right pleural cavity. Left‑sided effusions without liver disease, bilateral effusions without liver pathology, or a pneumothorax with effusion do not fit this scenario.

Hepatic hydrothorax happens when ascitic fluid from cirrhosis moves into the pleural space through small diaphragmatic defects. This process most often involves the right side, so the characteristic pattern is a right‑sided pleural effusion that occurs with ascites and liver disease. The right predominance reflects diaphragmatic anatomy and how ascitic fluid preferentially translocates into the right pleural cavity. Left‑sided effusions without liver disease, bilateral effusions without liver pathology, or a pneumothorax with effusion do not fit this scenario.