What are sinus problems? <br />Dr Ralph Stanley from Stanley ENT and Sinus Centre explains how sinus problems are evaluated with endoscopy and CT scans in part 2 of 4 mini-series in Up Close With. <br /><br />STANLEY EAR NOSE THROAT AND SINUS CENTRE <br />Suite #06-17 Gleneagles Medical Centre 6 Napier Road Singapore 258499 <br />Tel: +65 6475 2282