title: Double supernumerary isochromosome 9p in myeloproliferative syndrome.
abstract: The presence of supernumerary isochromosome 9p in duplicate in about 50% of bone marrow cells of an elderly female patient with myeloproliferative syndrome is reported.
mesh_terms: D000368:Aged; D002869:Chromosome Aberrations; D002899:Chromosomes, Human, Pair 9; D005260:Female; D005819:Genetic Markers; D006801:Humans; D007621:Karyotyping; D009196:Myeloproliferative Disorders / Q000235:genetics*
chemical_list: D005819:Genetic Markers