OBJECTIVES/HYPOTHESIS This study is undertaken to determine if the presence or absence of multiseptated frontal sinuses is associated with the presence or absence of supraorbital ethmoid cells (SOECs). STUDY DESIGN Analysis of prospectively collected data. METHODS Sixty consecutive patients with chronic rhinosinusitis were identified from a prospectively collected database at a tertiary-ref...

Introduction: This study aimed to investigate the distribution of ethmoid roof variation and symmetry according to Keros classification.   Materials and Methods: This cross-sectional study assessed the paranasal CT scans of 600 patients over 18 years of age with no history of surgery, trauma, or localized fracture in the ethmoid, nose, and anterior skull...

The development of the paranasal sinuses is an intricate process that begins in the intrauterine life and terminates in early adulthood. Among the paranasal sinuses, the ethmoid cells or labyrinth are probably the most complex structures, being associated with the highest number of normal variants. Variations in the pattern of pneumatization of the ethmoid cells can be divided into intraand ext...

PURPOSE This study compares medial orbital wall supporting structures in patients with isolated inferior and medial wall fractures. METHODS The morphologic properties in all consecutive patients with periocular trauma who underwent orbital computed tomography (CT) scans from January 2004 to March 2006 were reviewed. On CT scans, the size of the fracture, the number of ethmoid air cell septa, ...

Objective. The goal of the study was to determine the asymmetric distribution of the height of the ethmoid roof (fovea ethmoidalis). Method. We retrospectively reviewed 644 coronal sinus computer tomography (CT) scans. The height of the ethmoid roof was examined for possible lateral differences between the right and left sides. Results. In 221 CT scans (31%), there was an asymmetry between the ...

INTRODUCTION AND OBJECTIVES Our aim was to study the radiological anatomy of the ethmoidal arteries. METHODS A descriptive study was performed including CT images of 20 cadaver heads. The specimens were perfused with a radiopaque material and various anatomical parameters were analysed. RESULTS The anterior ethmoidal artery was found in 95% (38/40) of cases. It originated from the ophthalmi...

BACKGROUND The purpose of our study was to identify the role of work exposure to organic dusts in patients with malignant paranasal sinus tumors. METHODS We analyzed all patients surgically treated for a malignant paranasal sinus tumor at our institution between 1987 and 2006. All patients were specifically asked about their occupational history. The tumor site was classified as maxillary or ...

OBJECTIVE To assess the frequency of nodal involvement and its prognostic value in malignant tumors of the paranasal sinuses, particularly in maxillary sinus squamous cell carcinoma. DESIGN Retrospective review. SETTING Tertiary cancer center. PATIENTS The medical records of 704 consecutive patients surgically treated for malignant tumors of the paranasal sinuses from January 1968 to Marc...

PURPOSE Paranasal sinus mucocele is a benign, expansile mass which can occur as a result of trauma or spontaneous obstruction of a sinus tract. The purpose of this study was to describe and compare the clinical characteristics of primary mucoceles occurring in patients with no previous sinus surgery history or known cause of mucoceles and secondary mucoceles resulting as a complication followin...