Tuberc Respir Dis.  2009 Nov;67(5):458-461.

A Case of Pseudochylothorax Developed from Chronic Pleural Effusion after Treatment of Tuberculous Pleurisy

  • 1Department of Internal Medicine, Eulji Hospital, Eulji University School of Medicine, Seoul, Korea.
  • 2Department of Clinical Pathology, Eulji Hospital, Eulji University School of Medicine, Seoul, Korea.


A pseudochylothorax, a chyliform pleural effusion, is a rare disease of pleural effusion that contains cholesterol crystals or high lipid content that is not the result of a disrupted thoracic duct. Most of the cases were found in patients with long-standing pleural effusion due to chronic inflammatory disease, such as old tuberculous pleurisy or chronic rheumatoid pleurisy. We experienced a case of pseudochylothorax in a 74-year-old man, who was being treated for pulmonary tuberculosis and pleurisy 10 years ago. The diagnosis was confirmed on pathological study of the pleural effusion, which contained cholesterol crystals having a diagnostic rhomboid appearance.


Pseudochylothorax; Cholesterol; Pleural Effusion
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