Stereoscopic 3D Endoscopic Images of the Paranasal Sinuses

Abstract

OBJECTIVE: 1) Recognize this rare entity with the constellation of progressive enophthalmos and hypoglobus, demonstrated by CT imaging of paranasal sinuses. 2) Understand the pathophysiology of this entity, based on chronic maxillary sinus obstruction with hypoventilation due to obstruction of the ostiomeatal unit. METHOD: In this study we present a classic case of Silent Sinus Syndrome and a review of the etiology, pathophysiology, radiologic findings and surgical treatment. RESULTS: Our patient showed the typical findings on paranasal sinuses CT with complete unilateral obstruction of the maxillary sinus and ostiomeatal unit with collapse of the orbital floor. CONCLUSION: A clear set of criteria is needed for the diagnosis, these including enophthalmos and hypoglobus in the absence of clinically evident sinusitis, emphasizing the importance of CT imaging in the diagnosis. The treatment consists in restoring sinus ventilation and correction of the orbital floor defects. Smoking and the Nasal AirwaySverre Steinsvaag, MD, PhD (presenter); Milada Cvancarova, MSc OBJECTIVE: 1) Study the relationship between cigarette consumption and endonasal geometry. 2) Study the relationship between cigarette consumption and nasal airflow. 3) Study the relationship between cigarette consumption and nasal congestion. METHOD: Design: Cross sectional. Conducted: 2001Conducted: -2007. Condition: nasal obstruction/congestion. Subjects: referred patients with chronic nasal or sleep related complaints. Setting: secondary referral hospital. Intervention: acoustic rhinometry and peak nasal inspiratory flow. Outcome measures: minimal cross-sectional area, nasal cavity volume, nasal congestion index, peak nasal inspiratory flow. Independent variables: daily cigarette consumption (pack years) Preliminary analyses of ongoing study. Statistical methods: Linear and logistic regressions. RESULTS: Pack years was inversely associated with selected measures for minimal cross-sectional area, nasal cavity volume and reversible nasal congestion (pϽ0.001-0.05). CONCLUSION:We have demonstrated an inverse association between important rhinometric measures and cigarette consumption (pack years), indicating that smokers exhibit narrower nasal cavities, perform lower inspiratory flow, and have a less compliant mucosa than non-smokers. Stentless Endoscopic DacryocystorhinostomyRosalind Simon (presenter); Gurdeep Singh OBJECTIVE: Dacryocystorhinostomy (DCR) is a procedure performed to drain the lacrimal sac in cases of nasolacrimal duct obstruction or in chronic dacryocystitis. It can be performed externally or endoscopically. The aim of this study is to describe endoscopic dacryocystorhinostomy with full sac exposure and primary mucosal anastomosis without stenting the lacrimal ostium and to report perioperative and follow-up results achieved with this procedure since April 2005. METHOD: Forty-seven consecutive patients (38 Females and 9 Males; mean age 46.7y; range 14-74y) who presented to the DCR clinic with epiphora secondary to nasolacrimal duct obstru...