Conclusion: The case report highlights the rare occurrence of pulmonary metastasis in a benign World Health Organization grade 1 meningioma originating from an extracranial site. It also illustrates the important role of radiotherapy in treating patients with meningioma. Additionally, a review of related...
Meningiomas are benign tumors (WHO grade 1) derived from arachnoid cap cells and found attached to dural surfaces outside the brain. More aggressive forms (Grade II and III) may be histologically invasive and aggressive and tend to recur despite treatment. Meningiomas are often found incidentally ...
WHO grade I tumors are benign tumors exhibiting low proliferation, reporting mean MIB-1 labeling indices of around 4% (Perry et al 1998). Show moreView chapterExplore book Related terms: Edema Neoplasm Brain Tumor Recurrent Disease Syndrome Malignant Neoplasm Glioblastoma Neurofibromatosis Type 2 ...
The World Health Organization (WHO) classifies meningiomas into 15 subtypes under 3 major categories based on histologic characteristics and recurrence risk, as follows [1, 8, 9, 10] : Grade I (typical or benign), representing ∼80% of cases; includes 9 histologic variants and lacks the ana...
Grade 1—Benign/typical• Angiomatous• Fibrous (fibroblastic)• Lymphoplasmacyte-rich• Meningiothelial• Metaplastic• Microcystic• Psammomatous• Secretory• Transitional (mixed)Grade 2—Atypical• Chordoid• Clear cell• OncocyticGrade 3—Malignant/anaplastic• Anaplastic• ...
(Pathology) a tumour of the meninges of the brain that grows slowly and is usually benign, although it can be malignant Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014 ...
Most meningiomas are benign and correspond to World Health Organization grade I, whereas chordoid meningioma is a rare subtype, which is regarded as grade II. This report presents 1 case of intraparenchymal chordoid meningioma. The intraparenchymal chordoid meningioma consisted predominantly of tissue ...
primary brain tumors including malignant astrocytoma, glioblastoma, low-grade astrocytoma, oligodendroglioma, meningioma, and other benign tumors and metastatic ... M Salcman - 《Neurologic Clinics》 被引量: 93发表: 1985年 加载更多来源期刊 Pediatric Neurosurgery 研究点推荐 Collision Tumor meningioma Ast...
The following characteristics were examined as potential sources of heterogeneity in xenografted models: number of cells, cell concentration, established cell line used, parent tumor grade (WHO grade 1–3), and duration of incubation. For GEMs, the following characteristics were examined in subgroup ...
Whilst the majority of these tumors are benign (grade 1), they can occasionally be either atypical (grade 2) or malignant (grade 3) type [2, 3]. Higher grade (HG) meningiomas (Grade 2/3) correlate with worse prognosis and require a different management plan than lower grade (LG) ...