Alaa Montaser
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View article: Proton versus photon adjuvant radiotherapy: a multicenter comparative evaluation of recurrence following spinal chordoma resection
Proton versus photon adjuvant radiotherapy: a multicenter comparative evaluation of recurrence following spinal chordoma resection Open
OBJECTIVE Chordomas are rare tumors of the skull base and spine believed to arise from the vestiges of the embryonic notochord. These tumors are locally aggressive and frequently recur following resection and adjuvant radiotherapy. Proton …
View article: Single-Photon Emission Computed Tomography (SPECT-CT) as a Predictor of Pain Generators in Patients Undergoing Anterior Cervical Discectomy and Fusion (ACDF) for Axial Cervical Pain
Single-Photon Emission Computed Tomography (SPECT-CT) as a Predictor of Pain Generators in Patients Undergoing Anterior Cervical Discectomy and Fusion (ACDF) for Axial Cervical Pain Open
This case series represents the experience of our group to date with patients undergoing SPECT-CT-guided ACDF with results suggesting potential benefit in guiding fusion.
View article: A Surgical Perspective on the Association between Cystic Lesions of the Pineal Gland (Descartes' Seat of the Soul) and the Pituitary (the Master Gland)
A Surgical Perspective on the Association between Cystic Lesions of the Pineal Gland (Descartes' Seat of the Soul) and the Pituitary (the Master Gland) Open
Introduction Rene Descartes (1596–1650), the famous philosopher and scientist, identified the pineal gland as the only cerebral structure not represented bilaterally, the “seat of the soul”; and the source of rational thought. Pineal cysts…
View article: Intracranial venous malformations: Incidence and characterization in a large pediatric cohort
Intracranial venous malformations: Incidence and characterization in a large pediatric cohort Open
Background Significant advances have been reported recently in the genetic and mechanistic characterization of extracranial venous malformations. However, intracranial purely venous malformations (icVM) analogous to those outside the CNS h…
View article: Fetal and Neonatal MRI Predictors of Aggressive Early Clinical Course in Vein of Galen Malformation
Fetal and Neonatal MRI Predictors of Aggressive Early Clinical Course in Vein of Galen Malformation Open
Early neonatal and fetal MR imaging can be readily used for accurate early risk stratification, assisting in directing resources, timing treatment decisions, and identifying appropriate cohorts for novel interventions.
View article: Extended Endoscopic Endonasal Surgery to Ventral Skull Base Lesions
Extended Endoscopic Endonasal Surgery to Ventral Skull Base Lesions Open
Introduction In the last two decades, Endoscopic endonasal approaches (EEAs) have undergone a significant evolution with a major shift from a transsellar approach to a variety of approaches that can directly access the midline and paramedi…
View article: Predictors of Postoperative Diabetes Insipidus Following Endoscopic Resection of Pituitary Adenomas
Predictors of Postoperative Diabetes Insipidus Following Endoscopic Resection of Pituitary Adenomas Open
Pituitary adenoma patients presenting with visual abnormalities, suprasellar extension, or large tumors are at higher risk of developing DI postoperatively. These patients warrant closer postoperative monitoring as well as adequate preoper…
View article: Erratum: Endoscopic Endonasal Transtuberculum Sellae Approach for the Resection of Suprasellar Epidermoid Cyst
Erratum: Endoscopic Endonasal Transtuberculum Sellae Approach for the Resection of Suprasellar Epidermoid Cyst Open
[This corrects the article DOI: 10.1055/s-0038-1624590.].
View article: Erratum: Endoscopic Endonasal Transplanum–Transtuberculum Sellae Approach for the Resection of a Diaphragma Sellae Meningioma
Erratum: Endoscopic Endonasal Transplanum–Transtuberculum Sellae Approach for the Resection of a Diaphragma Sellae Meningioma Open
[This corrects the article DOI: 10.1055/s-0038-1624587.].
View article: Endoscopic Endonasal Transplanum–Transtuberculum Sellae Approach for the Resection of a Diaphragma Sellae Meningioma
Endoscopic Endonasal Transplanum–Transtuberculum Sellae Approach for the Resection of a Diaphragma Sellae Meningioma Open
The endoscopic endonasal approach (EEA) provides a direct access to diaphragma sellae meningiomas. We present a case of a 56-year-old-female with an incidentally diagnosed sellar/suprasellar lesion with no hormonal deficit; thus, she opted…
View article: Endoscopic Endonasal Transtuberculum Sellae Approach for the Resection of Suprasellar Intrainfundibular Epidermoid Cyst
Endoscopic Endonasal Transtuberculum Sellae Approach for the Resection of Suprasellar Intrainfundibular Epidermoid Cyst Open
A 49-year-old female presented with intense headaches of 3 months duration. Brain magnetic resonance imaging (MRI) was performed and showed a sellar–suprasellar lesion extending into the third ventricle. A presumptive diagnosis of a cranio…
View article: Endoscopic Endonasal Resection of Tuberculum Sellae Meningioma with Utilization of Indocyanine Green
Endoscopic Endonasal Resection of Tuberculum Sellae Meningioma with Utilization of Indocyanine Green Open
We present the case of a 67-year-old female with an incidental finding of a left-sided tuberculum sellae meningioma on a brain magnetic resonance imaging (MRI) for an unrelated complaint. Formal visual field testing showed a small defect i…
View article: Endoscopic Endonasal Resection of a Suprasellar Pituitary Adenoma Mimicking Tuberculum Sellae Meningioma in a Patient with an Intrasellar Persistent Trigeminal Artery
Endoscopic Endonasal Resection of a Suprasellar Pituitary Adenoma Mimicking Tuberculum Sellae Meningioma in a Patient with an Intrasellar Persistent Trigeminal Artery Open
A 50-year-old female with an incidentally diagnosed suprasellar lesion was initially managed conservatively due to the presence of an intrasellar persistent trigeminal artery going through the dorsum sellae and fundamentally forming the bl…
View article: Endoscopic Endonasal Approach to a Suprasellar Craniopharyngioma
Endoscopic Endonasal Approach to a Suprasellar Craniopharyngioma Open
We present the case of a 57-year-old male who presented with progressive right side vision loss whose workup revealed a large suprasellar lesion with invasion of the third ventricle. The pituitary stalk was not visible. Hormonal panel show…
View article: Endoscopic Approach to Petrous Apex: Clinical Series
Endoscopic Approach to Petrous Apex: Clinical Series Open
Background The petrous apex is arguably the most anatomically complex region of the skull base. The region's intimate relationships with the internal carotid artery (ICA) and audiovestibular apparatus render surgical access to the petrous …
View article: Endoscopic Endonasal Resection of Concomitant Pituitary Adenoma and Rathke—s Cleft Cyst: A Case Report and Review of Literature
Endoscopic Endonasal Resection of Concomitant Pituitary Adenoma and Rathke—s Cleft Cyst: A Case Report and Review of Literature Open
Background Pituitary adenomas (PA) and Rathke’s cleft cysts (RCC) are deemed to have a common ancestry, since RCC are thought to be derived from remnants of the Rathke’s pouch, and the adenohypophysial cells, from which PA develop, origina…
View article: Extended Endoscopic Endonasal Clipping of Basilar Apex Aneurysms: Anatomical Comparative Study and Surgical Simulation
Extended Endoscopic Endonasal Clipping of Basilar Apex Aneurysms: Anatomical Comparative Study and Surgical Simulation Open
Background Aneurysms of the posterior cerebral circulation constitutes 10% of intracranial aneurysms. Basilar apex (BA) aneurysms poses significant challenge in their management, not only because of their deep location and close proximity …
View article: The Role of Endoscopic Endonasal Surgery in the Management of Skull Base Chondrosarcomas: Technical Nuances and Short-Term Outcome
The Role of Endoscopic Endonasal Surgery in the Management of Skull Base Chondrosarcomas: Technical Nuances and Short-Term Outcome Open
Background Chondrosarcomas affecting the skull base are rare, slowly growing, locally aggressive tumors comprising 0.2% of all intracranial tumors and 6% of skull base tumors. Frequently, chondrosarcomas are clinically silent until it has …
View article: Minimally Invasive Approaches for Optic Nerve Decompression: Comparison between EEA and Endoscopic-Assisted Transorbital Transconjunctival Approach
Minimally Invasive Approaches for Optic Nerve Decompression: Comparison between EEA and Endoscopic-Assisted Transorbital Transconjunctival Approach Open
Background Treatment of optic nerve lesions, traumatic or nontraumatic, is widely variable and depend on the site and type of the lesion. Optic nerve decompression may be the primary goal or part of the management. Selection of the appropr…
View article: Endoscopic Endonasal Surgery for Erdheim−Chester—s Disease of the Clivus: A Case Report
Endoscopic Endonasal Surgery for Erdheim−Chester—s Disease of the Clivus: A Case Report Open
Background Erdheim–Chester's disease (ECD) is a rare form of non-Langerhans cell histiocytosis of unknown etiology that is characterized by xanthomatous infiltration of the affected tissues by foamy lipid-laden histiocytes. The immunohisto…
View article: The Role of the Expanded Endoscopic Endonasal Approach in Staged Surgery for Giant Olfactory Groove Meningioma: Technical Nuances
The Role of the Expanded Endoscopic Endonasal Approach in Staged Surgery for Giant Olfactory Groove Meningioma: Technical Nuances Open
Background Giant olfactory groove meningiomas (OGMs) are unique tumors that present a formidable challenge to skull base surgeons. They are highly vascular lesions, deriving their main blood supply from the anterior and posterior ethmoidal…
View article: Endoscopic Approaches to the Paramedian Skull Base: Quantitative Analysis and Comparison of Exposure and Surgical Freedom between the Endonasal and Contralateral Sublabial-Transmaxillary Approaches
Endoscopic Approaches to the Paramedian Skull Base: Quantitative Analysis and Comparison of Exposure and Surgical Freedom between the Endonasal and Contralateral Sublabial-Transmaxillary Approaches Open
Background Exposure of deep-seated lesions requires complicated endoscopic maneuvers. The expanded endonasal approach (EEA) to the paramedian skull base is limited laterally by the petrous and paraclival segments of internal carotid arteri…
View article: Endoscopic Endonasal Multimodular Approach for Resection of Concomitant Trigeminal Schwannoma and Pituitary Adenoma: A Single Corridor for Different Pathologies
Endoscopic Endonasal Multimodular Approach for Resection of Concomitant Trigeminal Schwannoma and Pituitary Adenoma: A Single Corridor for Different Pathologies Open
Background Trigeminal schwannomas (TS) represent significant challenge in their surgical management due to their anatomical diversity, and the varied relationship with multiple cranial nerves along different skull base compartments. They c…
View article: Use of Collagen Matrix for Skull Base Reconstruction following Endoscopic Endonasal Resection of Pituitary Adenoma
Use of Collagen Matrix for Skull Base Reconstruction following Endoscopic Endonasal Resection of Pituitary Adenoma Open
Background Skull base reconstruction following endoscopic endonasal approach (EEA) for skull base lesions is of paramount importance to avoid postoperative CSF leak, which is the most common complication following EEA. Different materials …
View article: Anterior Clinoid Mucocele Causing Peripheral Visual Field Defect: Case Report, Pathogenesis, and Surgical Treatment
Anterior Clinoid Mucocele Causing Peripheral Visual Field Defect: Case Report, Pathogenesis, and Surgical Treatment Open
Background Mucoceles are benign cystic lesions that involve mainly the frontal and ethmoid sinuses, containing mucoid sterile secretions produced by entrapped respiratory epithelium. Mucoceles of the paranasal sinus are a well-described en…
View article: Endoscopic endonasal pituitary gland hemi-transposition for resection of a dorsum sellae meningioma
Endoscopic endonasal pituitary gland hemi-transposition for resection of a dorsum sellae meningioma Open
A 69-year-old female with incidental diagnosis of a dorsum sellae meningioma had shown significant tumor growth after initial conservative management. The procedure started with a microscopic sublabial transsphenoidal approach to the sella…