Pilocytic astrocytoma
-
In children, the central nervous system tumors are exceeded in incidence only by leukemia and are more common than any of the other malignancies of childhood. Childhood central nervous system tumors encompass a range of histologic varieties from the histologically benignappearing pilocytic astrocytoma to the extremely malignant-appearing glioblastoma multiforme and the undifferentiated primitive neuroectodermal tumors. Similarly, the biologic behavior of childhood brain tumors varies not only according to histology but also with location of the tumor and age.
518p vimeyers 29-05-2024 2 2 Download
-
Juvenile Pilocytic Astrocytomas (JPAs) are one of the most common pediatric brain tumors, and they are driven by aberrant activation of the mitogen-activated protein kinase (MAPK) signaling pathway. RAF-fusions are the most common genetic alterations identified in JPAs, with the prototypical KIAA1549-BRAF fusion leading to loss of BRAF’s auto-inhibitory domain and subsequent constitutive kinase activation.
13p vileonardodavinci 23-12-2023 4 3 Download
-
C4d is a cleavage product of complement component C4 and is considered to serve as a marker for the site of complement activation. In this study C4d staining of grade I-IV astrocytic tumors was studied to explore if there is an association between complement activation and the grade of tumor, or patient survival.
7p vijisoo2711 30-09-2020 9 1 Download
-
Paediatric low-grade gliomas (LGGs) encompass a heterogeneous set of tumours of different histologies, site of lesion, age and gender distribution, growth potential, morphological features, tendency to progression and clinical course. Among LGGs, Pilocytic astrocytomas (PAs) are the most common central nervous system (CNS) tumours in children.
15p vijennie2711 29-09-2020 18 0 Download
-
Astrocytomas are the most common primary brain tumors distinguished into four histological grades. Molecular analyses of individual astrocytoma grades have revealed detailed insights into genetic, transcriptomic and epigenetic alterations. This provides an excellent basis to identify similarities and differences between astrocytoma grades.
22p vimoscow2711 29-08-2020 14 1 Download
-
Pilocytic astrocytoma is the most common type of brain tumor in the pediatric population, with a generally favorable prognosis, although recurrences or leptomeningeal dissemination are sometimes also observed.
16p vimoscow2711 29-08-2020 21 3 Download
-
Fibroblast growth factor receptors (FGFRs) are well-known proto-oncogenes in several human malignancies and are currently therapeutically targeted in clinical trials. Among glioma subtypes, activating FGFR1 alterations have been observed in a subpopulation of pilocytic astrocytomas while FGFR3 fusions occur in IDH wild-type diffuse gliomas, resulting in high FGFR3 protein expression.
12p vithimphu2711 31-07-2020 8 1 Download
-
Pilocytic astrocytoma is a low-grade central nervous system tumor most commonly seen in children. Dissemination from a primary intracranial tumor along the neuroaxis has been described at both presentation and disease progression.
6p vimanila2711 29-06-2020 13 1 Download
-
The understanding of the molecular biology of pediatric neuronal and mixed neuronal-glial brain tumors is still insufficient due to low frequency and heterogeneity of those lesions which comprise several subtypes presenting neuronal and/or neuronal-glial differentiation.
11p vikuala271 13-06-2020 7 1 Download
-
Compare and contrast the common types of brain tumors that affect the cerebrum, the cerebellum, the meninges, and the cranial nerves in adults and children; and outline their molecular basis and clinicopathologic features.
5p caothientrangnguyen 10-05-2020 17 0 Download
-
Bài viết mô tả đặc điểm lâm sàng, hình ảnh cộng hưởng từ, cắt lớp vi tính u sao bào thể lông ở trẻ em. U sao bào lông có đặc điểm: gặp ở trẻ em và thanh thiếu niên, diễn biến âm thầm, hình ảnh điển hình dạng nang và có tổ chức đặc ở thành nang ngấm thuốc, không có phù não quanh u.
6p viares2711 15-10-2019 35 2 Download
-
part 1 book “oxford textbook of neuro-oncology” has contents: astrocytic tumours - pilocytic astrocytoma, pleomorphic xanthoastrocytoma, and subependymal giant cell astrocytoma, oligodendroglial tumours, ependymal tumours, choroid plexus tumours,… and other contents.
288p tieu_vu13 06-08-2018 27 1 Download
-
part 2 book “oxford textbook of neuro-oncology” has contents: other tumours of the meninges, germ cell tumours, pituitary tumours, metastatic brain tumours, neoplastic meningitis - metastases to the leptomeninges and cerebrospinal fluid, familial tumour syndromes,… and other contents.
321p tieu_vu13 06-08-2018 35 1 Download
-
(bq) part 1 book "practical differential diagnosis in surgical neuropathology" presentation of content: intraoperative consultation, fibrillary astrocytoma, radiation change, pilocytic astrocytoma, pleomorphic xanthoastrocytoma, subependymal giant cell astrocytoma, oligodendroglioma,...
97p thangnamvoiva23 06-10-2016 27 4 Download
-
Dịch tễ học Tần số của hệ thần kinh trung ương chính khối ung thư bằng cách loại cụ thể các loại mô học WHO phân loại của u thần kinh đệm Pilocytic astrocytomas: ác tính astrocytomas vị trí: vị trí và trình bày các triệu chứng Ependymomas: trình bày các triệu chứng màng não:
0p taoxanh8 16-11-2011 68 3 Download