What does the suffix "-centesis" refer to in medical terminology?

The suffix "-centesis" in medical terminology specifically refers to a procedure involving the puncture of a body cavity or an organ to extract fluid or tissue for diagnostic or therapeutic purposes. This is commonly seen in terms such as "amniocentesis," which involves the puncture of the amniotic sac to obtain amniotic fluid, or "thoracentesis," which is the puncturing of the pleural space to remove fluid from around the lungs.

Recognizing this suffix is important in medical contexts, as it indicates that a procedure will involve an invasive action of inserting a needle or other instrument to access bodily spaces. Understanding the implications of this suffix helps in comprehending various medical procedures and their purposes in diagnosis and treatment.