Pathology General 9470ac6f Which is not cytogenetic abnormality in myclodysplastic syndrome A Chromosome 5q deletion B Monosomy 7 C Trisomy 8 D Chromosome 20q deletion High-Yield Explanation Solution: Adult → 5q deletion Pediatric → monosomy 7 Trisomy 8 → 3 copies of MYC gene These three are common genetic defects of MDS.