| pyopneumothorax | <medicine> Accumulation of air, or other gas, and of pus, in the pleural cavity. Origin: Gr. Pus + E. Pneumothorax. Source: Websters Dictionary (01 Mar 1998) |
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| subdiaphragmatic | Beneath the diaphragm. Synonym: infradiaphragmatic, subphrenic. (05 Mar 2000) |
| subdiaphragmatic abscess | An abscess beneath the diaphragm. (12 Dec 1998) |