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M Nakano, Y Kawanishi, S Kuge, Y Kuriyama, S Kuwabara, M Yaguchi and K Toyama
Department of Internal Medicine, Tokyo Medical College, Japan.
Discordant lymphomas, in particular nodal large-cell lymphomas with marrow
small-cell lymphoma, were discovered recently, and the prognosis of
patients with such disease has been discussed. The small cells were
reported to be small lymphocytic or small cleaved lymphoma cells. We have
detected, by kappa-lambda imaging (KLI) with delta-curves, using a flow
cytometer, small lymphoma cells in the peripheral blood (PB) and bone
marrow (BM) of 41 untreated patients with various B-cell lymphomas
expressing surface Ig (sIg+BCL), and evaluated their clinical and
prognostic significance. Small cells were found in approximately 90% (37 of
41) of sIg+BCL patients when either PB or BM was analyzed and, overall, the
presence of small cells correlated well with the disease activity. However,
in some patients, a few cells remained in the PB (16%) or BM (27%) even
when they were in remission, whereas in others, the cells were presented in
the PB or BM several months before relapse. These results suggest that the
detection of small cells in PB or BM by KLI may be helpful for screening
and monitoring patients with sIg+BCL. When the patients were subdivided
into three groups (normal, low, and high amplitude), according to the
abnormal grade criteria of the delta- curves, which were based on the
results of both PB-KLI and BM-KLI, the survival of the high-amplitude group
tended to be shorter than that of the normal group (P = .068), which was
particularly marked when the follow-up period exceeded 2 years. Moreover,
as the group grading worsened (normal less than low less than high), the
complete response rates deteriorated (100%, 71%, and 60%, respectively) and
the respective relapse rates after complete remission increased (17%, 40%,
and 67%). Thus, the determination of the proportion of small lymphoma cells
in PB and BM by KLI may be useful for predicting the prognoses of patients
with sIg+BCL.
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| Copyright © 1992 by American Society of Hematology Online ISSN: 1528-0020 | |||||||||