OBJECTIVE To clarify the three-dimensional anatomical features of the sphenoid sinus and its surrounding structures as are relevant to performing an endoscopic sphenoidotomy. METHODS Various dimensions of 224 CT images of the sphenoid sinus and surrounding structures from 122 Japanese adult patients were measured using the multiplanar reconstruction technique. RESULTS The mean distance from...

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...

Onodi cell sinusitis is a rare cause of isolated oculomotor nerve palsy. The sphenoid sinus and mucocele or invasive fungal are often associated with multiple cranialnerve symptoms simultaneously. However, cranial palsy due to simple rare. Sinus disease difficult diagnose based on patient history physical examination alone; CT MRI help in correctly assessing these lesions. Here we report case o...

BACKGROUND Primary inverted papilloma of the sphenoid sinus is rare. The tumor is considered locally aggressive. In selected cases inverted papilloma can be associated with squamous cell carcinoma. Radiologic imaging is a key to an accurate diagnosis. AIM We analyzed patient with inverted papilloma in sphenoid sinus which was removed with endoscopic surgery. MATERIAL AND METHODS We discuss ...

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...

Sphenoid sinus mucocele is an uncommon lesion related to inflammatory disease that is diagnosed after surgery or a traumatic event. This report describes an unusual case revealed by bacterial meningitis and cerebral abscess in a 12-year-old child. CT and MR imaging allowed precise extension to the skull base in preoperative management and follow-up investigations. Endoscopic transnasal marsupia...

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...

Primary inverted papilloma of the sphenoid sinus is rare. Such a case, of a 42-year-old female, is reported here, discussing the clinical presentation, diagnostic clues, radiographic features, histological findings and management. In contrast to the vast majority of cases that present with nasal complaints because of lateral nasal wall involvement, the clinical presentation of inverted papillom...