Send to

Choose Destination
Lung India. 2020 Jan-Feb;37(1):53-56. doi: 10.4103/lungindia.lungindia_95_19.

Case of urinothorax - A rare presentation.

Author information

Department of Respiratory Department, Jaipur Golden Hospital, Rohini Delhi, India.
Department of Radiology, ESI Hospital, Delhi, India.


Urinothorax (UT) is a rare and often undiagnosed condition, defined as the presence of urine in the pleural cavity due to the retroperitoneal leakage of urine (known as urinoma) into the pleural space. It is a rare cause of pleural effusion and is secondary to traumatic or obstructive reasons. UT is usually a transudate pleural effusion. Its diagnosis requires a high degree of clinical suspicion, because the respiratory symptoms tend to be absent or mild and urological signs tend to dominate. Thoracocentesis followed by measurement of creatinine in the pleural fluid is a procedure to establish the true diagnosis. The average pleural fluid-to-serum creatinine ratio is in the range of 1.09-19.8. Pleural fluid-to-serum creatinine ratio >1 is the diagnostic criterion of UT. We report a case of UT associated with trauma.


Thoracocentesis; urinoma; urinothorax

Supplemental Content

Full text links

Icon for Medknow Publications and Media Pvt Ltd Icon for PubMed Central
Loading ...
Support Center