During a CT scan procedure the patient can be asked to blow into a syringe, the so called trumpet maneuver, which may help to identify a piriform sinus fistula 122, a reported series suggests that timing may influence the ability of this maneuver to demonstrate the presence of a fistula as only 20 of those examined in the acute inflammatory phase revealed a fistula while 54 of those evaluated in the late inflammatory phase had a fistula documented 117 with the trumpet maneuver
doxycycline for staph
