https://www.dictionary.com/browse/peri

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peri- a prefix meaning “about” or “around” ( perimeter, periscope ), “enclosing” or “surrounding” ( pericardium ), and “near” ( perigee, perihelion ), appearing in loanwords from Greek ( peripeteia ); on this model, used in the formation of compound words ( perimorph ).



https://en.wikipedia.org/wiki/Thoracostomy

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A thoracostomy is a small incision of the chest wall, with maintenance of the opening for drainage. It is most commonly used for the treatment of a pneumothorax. This is performed by physicians, and paramedics, usually via needle thoracostomy or with a thoracostomy tube (chest tube).