Biomaterial Database

Chromosome abnormalities in low-grade central nervous system tumors. 1992

C A Griffin, and P P Long, and B S Carson, and H Brem

Johns Hopkins Oncology Center, Baltimore, MD 21205.

Ependymomas, oligodendrogliomas, and low-grade astrocytomas are slow-growing central nervous system (CNS) tumors that occur in both adults and children, whereas craniopharyngiomas and choroid plexus papillomas occur predominantly in children. We examined karyotypes of 32 of these low-grade tumors, including ten oligodendrogliomas, six ependymomas, 11 low-grade astrocytomas, four craniopharyngiomas, and one choroid plexus papilloma. Only normal karyotypes were obtained from 6 oligodendrogliomas. The rest had normal stemlines; three tumors had 45,X,-Y sidelines and one tumor had a sideline of monosomy 22. The most frequent abnormalities in the ependymomas were +7 (three tumors), -21 (two tumors), -22 (two tumors), and del(9)(p22) (two tumors). Gains of chromosome 7 and deletions of 9p were found more often in high-grade gliomas. Seven low-grade astrocytomas had normal stemlines, two had chromosome 7 abnormalities, a pilocystic astrocytoma had +der(15), and one tumor had a -Y sideline. The four craniopharyngiomas and one choroid plexus tumor were all apparently normal. The cytogenetics of low-grade CNS tumors differ from higher grade gliomas in that most low-grade tumors show little deviation from the normal karyotype.

UI	MeSH Term	Description	Entries
D007621	Karyotyping	Mapping of the KARYOTYPE of a cell.	Karyotype Analysis Methods,Analysis Method, Karyotype,Analysis Methods, Karyotype,Karyotype Analysis Method,Karyotypings,Method, Karyotype Analysis,Methods, Karyotype Analysis
D008297	Male		Males
D008875	Middle Aged	An adult aged 45 - 64 years.	Middle Age
D009837	Oligodendroglioma	A relatively slow-growing glioma that is derived from oligodendrocytes and tends to occur in the cerebral hemispheres, thalamus, or lateral ventricle. They may present at any age, but are most frequent in the third to fifth decades, with an earlier incidence peak in the first decade. Histologically, these tumors are encapsulated, relatively avascular, and tend to form cysts and microcalcifications. Neoplastic cells tend to have small round nuclei surrounded by unstained nuclei. The tumors may vary from well-differentiated to highly anaplastic forms. (From DeVita et al., Cancer: Principles and Practice of Oncology, 5th ed, p2052; Adams et al., Principles of Neurology, 6th ed, p655)	Oligodendroblastoma,Anaplastic Oligodendroglioma,Mixed Oligodendroglioma-Astrocytoma,Mixed Oligodendroglioma-Ependymoma,Oligodendroglioma, Adult,Oligodendroglioma, Childhood,Oligodendroglioma, Well-Differentiated,Well-Differentiated Oligodendroglioma,Adult Oligodendroglioma,Adult Oligodendrogliomas,Anaplastic Oligodendrogliomas,Childhood Oligodendroglioma,Childhood Oligodendrogliomas,Mixed Oligodendroglioma Astrocytoma,Mixed Oligodendroglioma Ependymoma,Mixed Oligodendroglioma-Astrocytomas,Mixed Oligodendroglioma-Ependymomas,Oligodendroblastomas,Oligodendroglioma, Anaplastic,Oligodendroglioma, Well Differentiated,Oligodendroglioma-Astrocytoma, Mixed,Oligodendroglioma-Astrocytomas, Mixed,Oligodendroglioma-Ependymoma, Mixed,Oligodendroglioma-Ependymomas, Mixed,Oligodendrogliomas,Oligodendrogliomas, Adult,Oligodendrogliomas, Anaplastic,Oligodendrogliomas, Childhood,Oligodendrogliomas, Well-Differentiated,Well Differentiated Oligodendroglioma,Well-Differentiated Oligodendrogliomas
D002648	Child	A person 6 to 12 years of age. An individual 2 to 5 years old is CHILD, PRESCHOOL.	Children
D002675	Child, Preschool	A child between the ages of 2 and 5.	Children, Preschool,Preschool Child,Preschool Children
D002869	Chromosome Aberrations	Abnormal number or structure of chromosomes. Chromosome aberrations may result in CHROMOSOME DISORDERS.	Autosome Abnormalities,Cytogenetic Aberrations,Abnormalities, Autosome,Abnormalities, Chromosomal,Abnormalities, Chromosome,Chromosomal Aberrations,Chromosome Abnormalities,Cytogenetic Abnormalities,Aberration, Chromosomal,Aberration, Chromosome,Aberration, Cytogenetic,Aberrations, Chromosomal,Aberrations, Chromosome,Aberrations, Cytogenetic,Abnormalities, Cytogenetic,Abnormality, Autosome,Abnormality, Chromosomal,Abnormality, Chromosome,Abnormality, Cytogenetic,Autosome Abnormality,Chromosomal Aberration,Chromosomal Abnormalities,Chromosomal Abnormality,Chromosome Aberration,Chromosome Abnormality,Cytogenetic Aberration,Cytogenetic Abnormality
D002872	Chromosome Deletion	Actual loss of portion of a chromosome.	Monosomy, Partial,Partial Monosomy,Deletion, Chromosome,Deletions, Chromosome,Monosomies, Partial,Partial Monosomies
D003397	Craniopharyngioma	A benign pituitary-region neoplasm that originates from Rathke's pouch. The two major histologic and clinical subtypes are adamantinous (or classical) craniopharyngioma and papillary craniopharyngioma. The adamantinous form presents in children and adolescents as an expanding cystic lesion in the pituitary region. The cystic cavity is filled with a black viscous substance and histologically the tumor is composed of adamantinomatous epithelium and areas of calcification and necrosis. Papillary craniopharyngiomas occur in adults, and histologically feature a squamous epithelium with papillations. (From Joynt, Clinical Neurology, 1998, Ch14, p50)	Craniopharyngioma, Adamantinous,Craniopharyngioma, Papillary,Rathke Pouch Tumor,Craniopharyngioma, Adult,Craniopharyngioma, Child,Neoplasm, Rathke Cleft,Neoplasm, Rathke's Cleft,Rathke Cleft Neoplasm,Rathke's Cleft Neoplasm,Rathke's Pouch Tumor,Adamantinous Craniopharyngioma,Adamantinous Craniopharyngiomas,Adult Craniopharyngioma,Adult Craniopharyngiomas,Child Craniopharyngioma,Child Craniopharyngiomas,Craniopharyngiomas,Craniopharyngiomas, Adamantinous,Craniopharyngiomas, Adult,Craniopharyngiomas, Child,Craniopharyngiomas, Papillary,Neoplasm, Rathkes Cleft,Papillary Craniopharyngioma,Papillary Craniopharyngiomas,Rathkes Cleft Neoplasm,Rathkes Pouch Tumor,Tumor, Rathke Pouch,Tumor, Rathke's Pouch
D004806	Ependymoma	Glioma derived from EPENDYMOGLIAL CELLS that tend to present as malignant intracranial tumors in children and as benign intraspinal neoplasms in adults. It may arise from any level of the ventricular system or central canal of the spinal cord. Intracranial ependymomas most frequently originate in the FOURTH VENTRICLE and histologically are densely cellular tumors which may contain ependymal tubules and perivascular pseudorosettes. Spinal ependymomas are usually benign papillary or myxopapillary tumors. (From DeVita et al., Principles and Practice of Oncology, 5th ed, p2018; Escourolle et al., Manual of Basic Neuropathology, 2nd ed, pp28-9)	Ependymoma, Myxopapillary,Ependymoma, Papillary,Anaplastic Ependymoma,Cellular Ependymoma,Clear Cell Ependymoma,Papillary Ependymoma,Anaplastic Ependymomas,Ependymoma, Anaplastic,Ependymomas,Ependymomas, Anaplastic,Ependymomas, Myxopapillary,Ependymomas, Papillary,Myxopapillary Ependymoma,Myxopapillary Ependymomas,Papillary Ependymomas