title: Chromosomal abnormalities in pituitary adenomas.
abstract: Cytogenetic studies were conducted on 30 pituitary adenomas, using both direct and/or short-term in vitro culture methods. An apparently normal chromosome complement was found in 14 tumors; 5 adenomas were characterized by hyperdiploid or near-triploid modal chromosome numbers. Recurrent numerical deviations were identified in 12 samples, which primarily involved gains of chromosomes 4, 7, 8, 9, 12, and 20 by gains, and losses of chromosomes 10, 14, 19, and 22. Four adenomas were shown to have structural chromosome rearrangements with no apparent recurrent pattern of involvement.
authors.affiliation: Laboratorio de Oncogenética Molecular, Unidad de Investigación, Departamento de Cirugía Experimental, Hospital Universitario La Paz, Paseo Castellana 261, 28046, Madrid, Spain.
authors.forename: M J
authors.initials: MJ
authors.lastname: Bello
authors.forename: J M
authors.initials: JM
authors.lastname: de Campos
authors.forename: M E
authors.initials: ME
authors.lastname: Kusak
authors.forename: J
authors.initials: J
authors.lastname: Vaquero
authors.forename: J L
authors.initials: JL
authors.lastname: Sarasa
authors.forename: J A
authors.initials: JA
authors.lastname: Rey
mesh_terms: D000236:Adenoma / Q000235:genetics*; D000293:Adolescent; D000328:Adult; D000368:Aged; D002869:Chromosome Aberrations / Q000235:genetics*; D002872:Chromosome Deletion; D025063:Chromosome Disorders; D005260:Female; D006801:Humans; D007621:Karyotyping; D008297:Male; D008875:Middle Aged; D010911:Pituitary Neoplasms / Q000235:genetics*; D011003:Ploidies