Fig. 1From: A prospective study on the microbiological examination of secretions from the paranasal sinuses in horses in health and diseaseEndoscopic images of the right ‘drainage angle’ (red arrow) with the Swing Tip-catheter in place. The catheter is advanced along the drainage angle and secretions are aspirated. a) In a healthy control horse. b) In a horse with squamous cell carcinoma of the right sinus system with purulent, malodorous discharge (green arrowheads). A: middle nasal concha, B: dorsal nasal concha, C: ventral nasal concha, NS: nasal septumBack to article page