This study describes a 64-yr-old male with a chronic left pleural effusion
following a coronary artery bypass 3 yrs earlier. On thoracocentesis, turbi
d fluid was obtained with crystals of cholesterol on microscopic examinatio
n, establishing the diagnosis of pseudochylothorax. The pleural fluid chole
sterol level was 207 mgdL(-1) (5.36 mmol.L-1). This is the first report of
pseudochylothorax in a chronic pleural effusion due to coronary artery bypa
ss surgery.