Objective: the aim of this study was to assess wether total immunoglobulin E (IgE) levels and peripheral eosinophilia correlate with the extent of sinus mucosal disease on computed tomography (CT) of paranasal sinuses. patients and methods: CT scans were performed, total IgE and peripheral eosinophil levels were measured for all patients. The relationships between peripheral eosinophilia and IgE levels, and the presence of mucosal disease on sinus CT imaging were also determined. Results: The total IgE did not correlate with CT stage of the disease, whereas there was a significant moderate positive correlation between CT stage and peripheral eosinophil levels. conclusion:The data suggest that eosinophil levels contribute toward mucosal inflammation in paranasal sinuses and the presence of peripheral eosinophilia in patients with sinusitis indicates a high likelihood of extensive disease. However, IgE levels did not correlate with CT scan findings. Calculation of the percentage of peripheral eosinophils by measurement of differential leukocyte count is a simple, easy and rapid technique for assessment of the severity of chronic rhino sinusitis.

Background:endoscopic sinonasal surgery (ESS) is a technically challenging surgery and concerns exist regarding patient safety early in the surgeon's learning curve because of its complications. Developing models with endoscopic appearance of the nasal airway closely resembling real human tissue was necessary to allow the same ESS steps to be performed as in real life. Objective: to carry out anatomical study on paranasal sinuses in goats, by means of computerised tomography and endoscopic dissection technique to assess possibility of using goats as a model for ESS training to allow trainees in nasal and sinus endoscopy to develop basic instrument handling and psychomotor skills. Methods: Computerized tomography was done for the goat skulls. ESS is done in the form of uncinectomy, maxillary sinus opening, ethmoidectomy and frontal sinus exploration with a special focus on the possibility of its use in training. Results: The endoscopic appearance of the nasal airway and paranasal sinuses of goats is reasonably similar to humans in morphological anatomy and structure. The thickness of goat sinus mucosa also showed enough consistency to carry out the endoscopic sinus surgical technique. Conclusions: Goat is suitable study model in learning endoscopic sinus surgery.

Background:endoscopic sinonasal surgery (ESS) is a technically challenging surgery and concerns exist regarding patient safety early in the surgeon's learning curve because of its complications. Developing models with endoscopic appearance of the nasal airway closely resembling real human tissue was necessary to allow the same ESS steps to be performed as in real life. Objective: to carry out anatomical study on paranasal sinuses in goats, by means of computerised tomography and endoscopic dissection technique to assess possibility of using goats as a model for ESS training to allow trainees in nasal and sinus endoscopy to develop basic instrument handling and psychomotor skills. Methods: Computerized tomography was done for the goat skulls. ESS is done in the form of uncinectomy, maxillary sinus opening, ethmoidectomy and frontal sinus exploration with a special focus on the possibility of its use in training. Results: The endoscopic appearance of the nasal airway and paranasal sinuses of goats is reasonably similar to humans in morphological anatomy and structure. The thickness of goat sinus mucosa also showed enough consistency to carry out the endoscopic sinus surgical technique. Conclusions: Goat is suitable study model in learning endoscopic sinus surgery.