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Hypodiploidy exists in 3-15% of patients with childhood acute lymphoblastic leukemia(ALL) and is associated with a poor prognosis. Monosomy 7 and monosomy 20 account for most karyotypic abnormalities in patients in whom whole chromosomes are lost and their incidences are rare. Parotid tumors in the pediatric age group are unusual and in 1996, there was a case of invasion of... |
