astrocytoma


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Related to astrocytoma: glioma, anaplastic astrocytoma

astrocytoma

 [as″tro-si-to´mah]
a tumor composed of astrocytes; classified in order of malignancy as: Grade I, consisting of fibrillary or protoplasmic astrocytes; Grade II (astroblastoma); Grades III and IV (glioblastoma multiforme).

as·tro·cy·to·ma

(as'trō-sī-tō'mă),
A glioma derived from astrocytes.
[G. astron, star, + kytos, cell, + -oma, tumor]

astrocytoma

/as·tro·cy·to·ma/ (as″tro-si-to´mah) a tumor composed of astrocytes; the most common type of primary brain tumor and also found throughout the central nervous system, classified on the basis of histology or in order of malignancy (Grades I–IV).

astrocytoma

(ăs′trō-sī-tō′mə)
n. pl. astrocyto·mas or astrocyto·mata (-mə-tə)
A malignant tumor of nervous tissue composed of astrocytes.

astrocytoma

pl. astrocytomas, astrocytomata [as′trōsītō′mə]
Etymology: Gk, aster + kytos + oma
a primary tumor of the brain composed of astrocytes and characterized by slow growth, cyst formation, invasion of surrounding structures, and often development of a highly malignant glioblastoma, within the tumor mass. Complete surgical resection of an astrocytoma may be possible early in the development of the tumor. It may also be treated with radiation therapy postoperatively or if surgery is not possible. Also called astrocytic glioma.
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Astrocytoma

as·tro·cy·to·ma

(as'trō-sī-tō'mă)
A glioma derived from astrocytes; in people younger than 20 years of age, usually arise in a cerebellar hemisphere; in adults, usually occur in the cerebrum, sometimes growing rapidly and invading extensively.
[G. astron, star, + kytos, cell, + -oma, tumor]

astrocytoma

A tumour derived from the supporting tissue of nerve cells (neuroglia). The astrocytoma varies widely in malignancy and rate of growth.

as·tro·cy·to·ma

(as'trō-sī-tō'mă)
A glioma derived from astrocytes; in people younger than 20 years of age, usually arise in a cerebellar hemisphere; in adults, usually occur in the cerebrum, sometimes growing rapidly and invading extensively.
[G. astron, star, + kytos, cell, + -oma, tumor]

astrocytoma (as´trōsītō´mə),

n a primary tumor of the brain composed of astrocytes and characterized by slow growth, cyst formation, invasion of surrounding structures, and often, the development of a highly malignant glioblastoma within the primary tumor mass.

astrocytoma

a common intracranial tumor composed of astrocytes; classified in order of malignancy as differentiated or undifferentiated groups.

gemistocytic astrocytoma
comprises gemistocytic astrocytes, plump or swollen astrocytes or gemistocytes.
References in periodicals archive ?
However, the WHO permits tumors designated as astrocytoma or oligodendroglioma to be tagged with the "not otherwise specified" modifier.
Distribution of CNS Tumours According to Histopathology Tumour Number Grade II astrocytoma 6 Grade III astrocytoma 5 Glioblastoma multiforme 6 Oligodendroglioma/Subependymoma 1 Meningioma 18 Schwannoma 3 Pituitary macroadenoma 2 Craniopharyngioma 2 Medulloblastoma 1 Central neurocytoma 1 Tuberculoma 3 Secondaries 1 Oligoastrocytoma 1 Table 3.
Cell types of breast adenocarcinoma (MCF-7), pluripotent embryonic carcinoma (NT2), cervix adenocarcinoma (HeLa), glioblastoma (A172), medulloblastoma (Daoy), embryonic kidney (HEK-293), hepatocellular carcinoma (HepG2), human brain astrocytoma (1321N1) and bone marrow normal fibroblast (HS5) were cultured in High Glucose Dulbecco's Modified Eagle Medium (DMEM, 4500 mg/l) supplemented with 10% FBS and sodium pyruvate and penicillin/streptomycin as described above.
3 Majority of the patients included were found to have grade II astrocytoma.
Histopathology showed astrocytoma grade II in 34(40%) of patients.
Subependimal giant cell astrocytoma (SGCA) which develops in the brain, angiomyolipomas in the kidney and rhabdomyomas in the heart are the tumors which may lead to clinical symptoms.
It also reviews key players involved in the therapeutic development for Anaplastic Astrocytoma and special features on late-stage and discontinued projects.
Metachronous secondary atypical meningioma and anaplastic astrocytoma after postoperative craniospinal irradiation for medulloblastoma.
The imaging findings of this patient are suggestive of a subependymal giant cell astrocytoma versus a subependymal nodule based on its incomplete calcification, enhancement with gadolinium, and size (>1 cm).
In this study, we have investigated the hypothesis that silver and gold nanoparticles exert differential cytotoxic effects on human astrocytoma (glioblastoma) U87 cells and silver nanoparticles are more cytotoxic than gold nanoparticles.
1, 3) Astrocytoma is the most common intramedullary tumor in this group, accounting for up to 60 percent.
Lewis was just 20 months old when he was diagnosed with juvenile pilocytic astrocytoma – a rare, benign and slow–growing childhood brain tumour.