The lateral limit of endoscopic endonasal surgery has yet to be defined. The aim of this study was to investigate the lateral limit of endoscopic endonasal surgery at the level of the sphenoid sinus. Access from the sphenoid sinus to the middle cranial fossa through the cavernous sinus triangles was evaluated by cadaver dissection. Anatomical analysis demonstrated that the medial temporal dura ...

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...

The differential diagnosis for expansile masses of the sphenoid sinuses includes both benign and malignant lesions. We herein present a case of a 79-year-old female who presented with chronic epistaxis and an expansile soft tissue mass centered in the sphenoid sinus with erosion of the skull base. Endoscopic resection of the lesion was performed, with histopathological examination revealing org...

SUMMARY Spontaneous lateral sphenoid cephaloceles arise from bony defects in the lateral sphenoid, in the absence of predisposing factors such as trauma, surgery, mass, or congenital skull base malformation. We reviewed CT and MR imaging findings and clinical data of 26 patients with spontaneous lateral sphenoid cephaloceles to better understand anatomic contributions to pathogenesis, varying c...

The sinus sphenoidalis is the paranasal sinus most centrally located in the skull base and known to vary extremely in dimensions. A very large volume of the sinus visible on skull radiographs is called sinus 'hyperaeration'. This finding has been described many times in the literature, but is generally rare. The term 'pneumosinus dilatans' is synonymously used to address an unexpectedly large p...

BACKGROUND Solitary involvement of the sphenoid sinus has rarely been reported in non-Hodgkin's lymphoma. Isolated oculomotor nerve palsy is uncommon as an initial presentation of malignant tumors of the sphenoid sinus. CASE PRESENTATION A 53-year-old woman presented with a three-month history of headache and diplopia. Neurological examination revealed complete left oculomotor nerve palsy. Ma...

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 ...