Background Sphenoethmoid cells may be above the sphenoid sinus with/ or without con-tact to optical nerve. Although sphenoethmoid cells are theoretically considered to possibly influence the sphenoid sinus volume, we could not find any study in the literature on this issue. Aims The aim of our study was to detect sphenoethmoid cells and measure the sphenoid sinus vol-ume using multiplanar com...

Objectives: Cholesterol granuloma of the sphenoid sinus has rarely been reported. Methods: A 50-year-old man visited our hospital presenting with a 2-year history of intermittent right-sided headache, 1-month history of right-sided tinnitus, and 5-year history of nasal obstruction and purulent nasal discharge. Computed tomography revealed a well-demarcated expansile mass in the right sphenoid s...

The sphenoid sinus occupies a central location in transsphenoidal surgery (TSS). It is important to identify relevant anatomical landmarks to enter the sphenoid sinus and sellar region properly. The aim of this study was to identify anatomical landmarks and their value in single-nostril endonasal TSS. A retrospective study was performed to review 148 cases of single-nostril endonasal TSS for pi...

BACKGROUND AND PURPOSE The sphenoid sinus is rarely implicated as a site of spontaneous CSF fistula. We undertook this study to evaluate the potential etiopathogenesis of spontaneous CSF fistula involving the sphenoid sinus and to review the imaging findings. METHODS We retrospectively reviewed the imaging findings of 145 cases of CSF fistula from our departmental archives (August 1995 throug...

The aim of this report is to investigate the pathogenesis and surgical treatment of encephalocele located in the sphenoid sinus and presented with spontaneous rhinorrhea. The data of a patient with sphenoid sinus encephalocele was analyzed in association with the review of literature. The patient admitted to our clinic with rhinorrhea from the left nasal cavity. Cranial magnetic resonance imagi...

BACKGROUND Sphenoid sinus is the most inaccessible paranasal sinus, enclosed within the sphenoid bone and intimately related to numerous vital neural and vascular structures. Anatomic variation of the sphenoid sinus is well documented and may complicate surgery in such a place. OBJECTIVE To outline the surgically risky anatomic variants of the sphenoid sinus as well as the variable relationsh...

BACKGROUND AND PURPOSE The termination of the superficial middle cerebral vein is classically assimilated to the sphenoid portion of the sphenoparietal sinus. This notion has, however, been challenged in a sometimes confusing literature. The purpose of the present study was to evaluate the actual anatomic relationship existing between the sphenoparietal sinus and the superficial middle cerebral...

BACKGROUND The anatomical structures of anterior area of sphenoid sinus are observed by CT reconstruction of radiographic images in some studies. However, the detailed anatomic information of the extended transsphenoidal approach is still incomplete. METHOD Fifteen cases (30 sides) of adult cadaveric skulls and 20 cases (40 sides) of bleached adult dry skulls were observed and measured under ...

OBJECTIVES A sphenoid sinus fungal ball is a rare disease that can cause visual disturbances. Most afflicted patients remain in an indolent state. However, once the visual disturbance has occurred, the recovery rate is very low. The purpose of this study was to overview the clinical characteristics of patients with a sphenoid sinus fungal ball and ascertain factors possibly related to the occur...