OBJECTIVE To quantitatively assess the imaging characteristics of sellar lesion in dual-energy computed tomography (CT) imaging for differentiation of sellar meningiomas and pituitary adenomas during the arterial phase (AP) and venous phase (VP). MATERIALS AND METHODS 51 patients with sellar/parasellar tumors (33 macroadenomas and 18 meningiomas) were examined with CT spectral imaging during ...

BACKGROUND It is difficult for neurosurgeons to perceive the complex three-dimensional anatomical relationships in the sellar region. METHODS To investigate the value of using a virtual reality system for planning resection of sellar region tumors. The study included 60 patients with sellar tumors. All patients underwent computed tomography angiography, MRI-T1W1, and contrast enhanced MRI-T1W...

Aims: Sphenoid sinus is one of the most inaccessible paranasal sinus, and is closely correlated to many vascular and neural structures. Anatomic variation of the sphenoid sinus can complicate surgery in this area. The aim of the present investigation was to define the sphenoid sinus variations and the relevant structures using cone-beam computed tomography (CBCT). Methods: This cross-sectiona...

Aim: In this study, we aimed to investigate the relationship between sphenoid sinus pneuma¬tization and angle of Eustachian tube. Methods: The study included a total 158 patients. tube (ETA) was measured pneumatization classified in coronal plane. Results: According classification pneumatization, 52 (16%) hemi-sphenoids were type 1, 177 (56%) 2, 87 (27.5%) hemi-sphe¬noids 3. sagittal classifica...

A conchal non-pneumatized sphenoid sinus was previously considered to be a contraindication to the endoscopic transsphenoidal route to the sella due to its small sellar floor and poor anatomical landmarks, such as the optic nerve canal, opticocarotid recess and internal carotid arteries canal. The present study aimed to investigate the methodology and characteristics of the endoscopic transsphe...

The sellar and juxtasellar regions in the paediatric population are complex both anatomically and pathologically, with magnetic resonance imaging (MRI) being the "gold standard" imaging modality due to the high contrast of detail. Assessment requires a detailed understanding of the anatomy, embryology, pathophysiology and normal signal characteristics of the pituitary gland and surrounding stru...

Sellar cysticercosis is a rare form of neurocysticercosis. A septum pellucidum cysts is a rare, often asymptomatic cystic structure between the lateral ventricles. We report here a male patient with sellar cysticercosis and septum pellucidum cysts who was successfully treated by neuroendoscopic resection. The patient was a 28-year-old male who presented with intermittent headaches for 5 years. ...

PURPOSE This study compares sellar intensities in 17 patients without sellar pathology using half (0.05 mmol/kg, nine patients) and full-dose (0.1 mmol/kg, eight patients) gadopentetate dimeglumine (Gd-DTPA). METHODS Sellar MR studies of eight patients who received full and nine patients who received half-dose Gd-DTPA were compared, retrospectively. Sequences included pre-, immediate, and del...

Metastatic tumors in the sellar and parasellar regions are uncommon and rarely detected in clinical practice. We present four cases of sellar and parasellar metastatic tumors, which metastasized from distant organ in one case and extended directly from adjacent structures in three. Common presenting symptoms were cranial neuropathies, headache and facial pain. Invasion into the cavernous sinus ...