noun (plural paracenteses /ˌparəsɛnˈtiːsiːz/)[mass noun] Medicine
The perforation of a cavity of the body or of a cyst or similar outgrowth, especially with a hollow needle to remove fluid or gas.
- Patients with new-onset ascites or clinical deterioration should undergo paracentesis.
- A paracentesis done upon admission to the hospital was negative for tumor cells.
- In patients with cirrhosis, ascites is treated with paracentesis and spironolactone.
Late 16th century: via Latin from Greek parakentēsis, from parakentein 'pierce at the side'.
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