title: Clonal evolution in primary 5q-syndrome.
abstract: Primary 5q-syndrome is a type of myelodysplastic syndrome characterized by refractory anemia, thrombocytosis, and hypolobulated megakaryocytes. The risk of leukemic transformation is low. A case of 5q- syndrome that occurred in a 42-year-old woman and was complicated by leukemic transformation 7 years after the initial diagnosis is reported. An additional clonal karyotypic anomaly, del(7q), was seen in the leukemic cells. The literature on leukemic and karyotypic evolution of primary 5q- syndrome is reviewed and the implication of karyotypic evolution is discussed.
authors.affiliation: Institute of Pathology, Queen Elizabeth Hospital, Kowloon, Hong Kong.
authors.forename: K F
authors.initials: KF
authors.lastname: Wong
authors.forename: J K
authors.initials: JK
authors.lastname: Chan
authors.forename: Y C
authors.initials: YC
authors.lastname: Chu
authors.forename: Y L
authors.initials: YL
authors.lastname: Kwong
mesh_terms: D000208:Acute Disease; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002471:Cell Transformation, Neoplastic / Q000235:genetics; D002869:Chromosome Aberrations; D005260:Female; D006801:Humans; D007621:Karyotyping; D007938:Leukemia / Q000209:etiology / Q000235:genetics; D008297:Male; D008875:Middle Aged; D009190:Myelodysplastic Syndromes / Q000150:complications / Q000235:genetics*