History A list of downloadable documents created during development. Other information Balloon catheter dilation of paranasal sinus for chronic sinusitis (second interventional procedures consultation) information Balloon catheter dilation of paranasal sinus ostia for chronic sinusitis (interventional procedures overview) PDF 108 KB 02 January 2008 Balloon catheter dilation of paranasal sinus ostia for chronic sinusitis (interventional procedures consultation) information