Cytogenetic characteristics of childhood non-Hodgkin lymphoma.
Cytogenetic studies were performed successfully on 24 patients with non-Hodgkin lymphoma (NHL) who were younger than 15 years of age. Of these, 22 patients (92%) had abnormal clones. With respect to histologic findings, 3 (25%) of the 12 patients with lymphoblastic lymphoma had 14q11 translocations and 2 (17%) had t(9;17) (q34;q23). Four (80%) of the five patients with small non-cleaved cell lymphoma had t(8;14)(q24;q32). With respect to immunologic findings, four (44%) of the nine patients with T-cell lymphoma had abnormalities consisting of 14q11 and 7q36 translocations, in which the T-cell receptor genes resided. Three (33%) of the patients with T-cell lymphoma had t(9;17)(q34;q23). However, three (43%) of the seven patients with B-cell lymphoma had t(8;14) (q23;q32), and two (29%) of the patients with B-cell lymphoma had an extra i(11q) chromosome with a resultant 11q tetrasomy. Non-T-cell non-B-cell lymphomas, which occurred in 21% of all patients, showed various chromosomal abnormalities. This study demonstrated that, in childhood NHL, karyotype correlates closely with immunophenotype, clinical features, and histologic findings.
Shikano
T
T
Department of Pediatrics, Hokkaido University, Japan.
Ishikawa
Y
Y
Naito
H
H
Kobayashi
R
R
Nakadate
H
H
Hatae
Y
Y
Takeda
T
T
D000293:Adolescent; D002648:Child; D002675:Child, Preschool; D002869:Chromosome Aberrations; D025063:Chromosome Disorders; D005260:Female; D006801:Humans; D016130:Immunophenotyping; D007223:Infant; D007621:Karyotyping; D016393:Lymphoma, B-Cell / Q000235:genetics / Q000473:pathology; D008228:Lymphoma, Non-Hodgkin / Q000235:genetics* / Q000473:pathology; D016399:Lymphoma, T-Cell / Q000235:genetics / Q000473:pathology; D008297:Male