STATEMENT OF THE PROBLEM The sphenoid sinus is a common target of paranasal surgery. Functional endoscopic sinus surgery is likely to endanger the anatomic variations of vital structures adjacent to the sphenoid sinus. PURPOSE The aim of this study was to determine the variations of sphenoid sinus and the related structures by using cone-beam computed tomography (CBCT). MATERIALS AND METHOD...

BACKGROUND The sphenopalatine foramen is located on the lateral nasal wall and has multiple variants and anatomic landmarks that are important to know to optimize RESULTS in the surgical management of posterior epistaxis. OBJECTIVE This study describes the endoscopic anatomy of the sphenopalatine foramen, related structures and anatomic variations in a Mexican population. METHODS We perform...

* Received for publication: December 3, 2001; accepted: May 10, 2002 INTRODUCTION Epistaxis is the commonest nasal emergency requiring hospital admission (Small and Maran, 1984). Its prevalence in the population is estimated to be between 10–12% (Shaheen, 1967), of which 10% seek medical attention (Ram et al., 2000). Of these, 1% will require surgery (Ram et al., 2000). Traditionally, epistaxis...

INTRODUCTION Frequent and broad application of endoscopic sinus surgery (ESS) in parallel with experience makes it imperative to know the anatomy and the existing pathology very well before surgery. This study examines the association between anomalies in the sphenoid sinus area in paranasal sinuses computed tomography (PNS-CT) and pathological findings and determines variations of sphenoid sin...

We examined 50 computed tomographic (CT) scans that included sections through the base of the skull at a wide variety of angles. Each of these examinations had an accompanying localizing radiograph so that the angle at which the scan had been obtained could be ascertained . The scans were randomly arranged and rated as to how well 11 structures in the skull base were visualized: (1) foramen mag...