Does positive end-expiratory pressure lower the risk of laser-induced polyvinylchloride tracheal-tube fires?
It is recommended that, in addition to other safety practices, PEEP be added to the breathing circuit during CO2 laser operations on the airway in which PVC tracheal tubes or laser-resistant tracheal tubes with PVC components are used.
  Patients with seminomas showing focal DNMT3B expression are at increased risk of relapse, and should be followed up carefully.