Consensus Radiation Treatment Planning Guidelines Utilizing (68)Ga-DOTATATE PET/CT for Resected Meningiomas.

Background: Meningiomas are the most common primary intracranial tumor. Somatostatin receptor 2 (SSTR 2) is almost universally expressed in meningioma tissue. For patients who require adjuvant radiation, SSTR based (68)Ga-DOTATATE positron emission tomography (PET) imaging can detect additional or residual disease not discernible on magnetic resonance imaging (MRI).

Impact of vascular supply variability on the prognosis of meningioma patients: a retrospective study based on territory arterial spin labeling.

Background: Territorial arterial spin labelling (t-ASL) could be an alternative method to digital subtraction angiography (DSA) when evaluating feeding arteries by previous reports, however, blood supply variations on meningioma prognosis remains unclear. In this study, the prognosis of meningiomas mainly supplied by the internal carotid artery (ICA) and external carotid artery (ECA) was compared, and relevant clinical factors were investigated.

Methods: t-ASL technique was employed to categorized pathologically-confirmed meningioma patients into the ICA, ECA, ICA co-supplied, and non-ICA co-supplied group.

Peritumoral vessel characteristics on magnetic resonance venography reflect the sinus invasion status of para-sinus meningioma.

Background: Early recognition of sinus invasion for meningiomas matters the clinical intervention. Therefore, we retrospectively investigated the relationship between peritumoral vessel features on magnetic resonance venography (MRV) and sinus invasion status.

Methods: Images of phase contrast MRV (PC-MRV, n=46) and contrast-enhanced MRV (CE-MRV, n=39) were independently assessed by four experienced neuroradiologists, including the adjacent sinus status, the peritumoral vessel count and diameter-associated parameters.

Enhanced MRI-based brain tumor segmentation and feature extraction using Berkeley wavelet transform and ETCCNN.

Objective: Brain tumors are abnormal growths of brain cells that are typically diagnosed via magnetic resonance imaging (MRI), which helps to discriminate between malignant and benign tumors. Using MRI image analysis, tumor sites have been identified and classified into four distinct tumor categories: meningioma, glioma, not tumor, and pituitary. If a brain tumor is not detected in its early stages, it could progress to a severe level or cause death.

Primary intracranial neuroendocrine tumor at the sphenoid ridge with metastasis to the spinal cord: A case report.

Rationale: Neuroendocrine tumors (NETs) originate from neuroendocrine cells and they are depicted with both nerve cells as well as hormone-producing cells. These tumors were initially discovered in extracranial locations and central nervous system involvement is often a result of metastasis. Herein, we present a very rare case of primary intracranial neuroendocrine tumor (PINET) that masqueraded as meningioma at the sphenoid ridge with metastasis to the spinal cord in a patient without a known history of extracranial NET at the time of diagnosis.

Gross target volume contouring in canine extra-axial brain tumors: Effects of magnetic resonance image slice thickness and time between subsequent image sets.

Accurate determination of the gross target volume (GTV) is critical in radiation treatment planning, as errors could result in underdosing of the tumor or overdosing of nearby organs at risk. This multicenter retrospective observational serial measurement study evaluated the effects of variations in MRI slice thickness and a time delay between the diagnostic (MRI-1) and RT planning (MRI-2) MRIs GTV contouring in dogs with presumed meningiomas. The hypothesis was that the GTV would increase in size with time on T1-weighted sequences with contrast.

Enhanced Brain Tumor Classification Through Optimized Semantic Preserved Generative Adversarial Networks.

Brain tumor is a most dangerous disease and requires accurate diagnosis in a short period to ensure the best treatment. Traditional methods for brain tumor classification (BTC) are quite effective, even though usually resulting in clinical manual analysis, which takes more time and prone to errors. Initially, the input image is collected from Brain Tumor dataset.

Venous vascular malformation of the parotid gland.

Venous vascular malformations of the parotid gland are very rare vascular tumors, especially among adults. This case report discusses the presentation and challenges of diagnosing a venous vascular malformation of the parotid gland in a patient with previous oncologic history. Our patient is a 45-year-old female with a history of breast cancer, meningioma, and secreting pituitary adenoma who presented with a malformation on magnetic resonance imaging, incidentally demonstrating a T2 intense mass in the superficial lobe of the right parotid gland.

Diagnostic considerations of tumors of the sellar region according to their geometry and vector growth.

Introduction: Sellar and parasellar tumors are frequent lesions in neurosurgical practice, highlighting pituitary adenomas, craniopharyngiomas, and sellar tubercle meningiomas. The clinical manifestations are similar, however; There are imaging aspects that differentiate them.

Objective: Show imaging aspects of tumors in the sellar and parasellar region that guide their histopathological diagnosis.

Transdural location as a predictor of recurrence in spinal cord meningiomas.

Spinal cord meningiomas are typically benign, rare tumors that pose clinical challenges owing to their location and potential for spinal cord compression. This study aimed to assess the radiological features of spinal cord meningiomas and the key factors associated with their recurrence. We conducted a retrospective, single-institution study on 67 patients with pathologically confirmed spinal cord meningiomas who were surgically treated between January 2016 and December 2023.

Metastasis of WHO Grade II Meningioma With Subsequent Pathological T12 Fracture: A Case Report.

Case: A 64-year-old woman with a history of World Health Organization Grade II (Ki-67 20%) atypical meningioma presented with T12 vertebral body burst fracture as a complication of metastatic meningioma (SSTR2+). Following disease progression, decompression surgery and stabilization through T10-L2 posterior thoracolumbar instrumented fusion was performed.

Conclusion: This is one of few documented cases of spinal metastatic meningioma causing pathological fracture and the first to detail surgical management and longitudinal follow-up.

[Pituicitoma in a patient with neurofibromatosis type 1].

Pituicytoma is a rare low degree tumor that arises from pituicytes in the infundibulum and posterior pituitary gland. As they do not have characteristic radiological features, they can be misdiagnosed as pituitary adenoma, meningioma, or craniopharyngioma. Clinically, patients can present with hormonal disturbances, headaches and visual field defects.

Single-step 3D printing aided cranio-orbital reconstruction with patient specific polyetheretherketone implants after resection of benign spheno-orbital tumors.

Purpose: Computer-aided design (CAD) and computer-aided manufacturing (CAM) techniques have paved the way for single-step resections and cranio-orbital reconstructions with patient specific implants in spheno-orbital tumors. Here, we present our interdisciplinary maxillofacial and neurosurgical workflow and a case series of patients treated with this integrated approach.

Methods: Patients, who underwent single-step resection of benign spheno-orbital tumors and cranio-orbital reconstruction with polyetheretherketone (PEEK) patient specific implants (PSI) from 2019 to 2024 in our institution were included.

Hyperostotic meningiomas in children. A case-based update.

Background: Meningiomas are rare tumors in children compared with adults. Their main peculiarities are the frequent convexity or intraventricular location, the common association with neurofibromatosis-2 (NF-2) and the relatively high rate of aggressive and/or hyperostotic variants. Hyperostosis may complicate the surgical management.

A Posterior Cranial Fossa Lesion Mimicking Myasthenia Gravis.

Unlabelled: A 41-year-old male with prior diagnosis of seronegative myasthenia gravis presented with complaints of bilateral ptosis, dysphagia, nasal voice and nasal regurgitation. Despite treatment with pyridostigmine, there was lack of significant improvement in the symptoms. Further investigations, including antibody assays and nerve conduction studies did not support the diagnosis.

Metastatic Temporal Bone Tumor From Renal Cell Carcinoma Coexisting With Sphenoid Ridge Meningioma: A Case Report.

Metastatic renal cell carcinomas (RCC) of the skull are relatively rare. Here, we present a rare case of a skull tumor due to metastatic RCC coexisting with a sphenoid ridge meningioma. A 69-year-old man was followed up for a sphenoid ridge meningioma.

Advancing multi-categorization and segmentation in brain tumors using novel efficient deep learning approaches.

Background: A brain tumor is the development of abnormal brain cells, some of which may progress to cancer. Early identification of illnesses and development of treatment plans improve patients' quality of life and life expectancy. Brain tumors are most commonly detected by magnetic resonance imaging (MRI) scans.

Modified Lateral Supraorbital Craniotomy with Posterior Orbitotomy and Anterior Clinoidectomy for Resection of a Midline Planum and Tuberculum Sellae Meningioma.

The patient is a 51-year-old woman who had been experiencing syncope and near-syncopal events for at least 10 years with an otherwise benign neurological exam. Magnetic resonance imaging revealed an extra-axial mass consistent with a midline planum and tuberculum sellae meningioma, for which the patient opted to have resected. We demonstrate how performing a posterior orbitotomy with anterior clinoidectomy can enhance a lateral supraorbital craniotomy.

Surgical treatment of tuberculum sellae meningioma: A retrospective review of single institutional experience.

Background: Tuberculum sellae meningiomas (TSMs) represent a distinct entity among intracranial meningiomas. Both transcranial approaches (TCAs) and endoscopic endonasal approaches (EEAs) have provided neurosurgeons with options for managing these difficult tumors. Still, controversies persist regarding the selection criteria for the most optimal approach.

Paramedian transparietal approach to the lateral ventricle in a dominant hemisphere: how I do it.

Background: Intraventricular tumors present significant surgical challenges due to their deep location and proximity to critical neuroanatomical structures. Surgical strategies include the transtemporal, interhemispheric and transparietal approaches, each carrying specific risks. Recently, a paramedian transparietal approach to a lateral ventricle meningioma in the dominant hemisphere was described.