costodiaphragmatic recess

(redirected from phrenicocostal sinus)

cos·to·di·a·phrag·mat·ic re·cess

the cleftlike extension of the pleural cavity between the diaphragm and the rib cage; pleural effusions collect here when in the upright position, and since the lung only partially enters, this is the site of thoracocentesis.
Farlex Partner Medical Dictionary © Farlex 2012
References in periodicals archive ?
However, the effusion measuring 6 -11 mm remained in the left phrenicocostal sinus. The child did not have any difficulties.