Three hundred and thirty seven 337cases of leukemia among Koreans, which are
confirmed by hematological examination at the Department of Clinical Pathology, Seoul
National at University Hospital from Jan.1957 to Oct.1968, were studied.
The results are as followings :
1. The number of leukemia patients seems to be increasing in recent years.
2. The sex ratio of male to female is 2.0:1.0. (Table 2).
3. The age distribution of leukemia cases indicates a relatively high incidence in
young age groups (0-9 yrs ; 22%, 10-19 yrs: 20.0%) and low incidence in older age
groups (50-59 yrs ; 7.2%, 60 &over 2.8%).
4. Type incidences of leukemias are ; 32.5% in Acute Myelocytic Leukemia, 28.1% in
Acute Lymphocytic Leukemia 21.9% in Chronic Myelocytic Leukemia in decreasing order
of frequency. The Chronic Lymphocytic Leukemia is only 0.6% of total leukemia cases.
5. The mean hemoglobin levels of the leukemia cafes are less than 9 gm/dl. in 74% of
total cases and more than 12 gm/dl. in 4.9%. Acute Leukemia cases reveal more severe
anemia.
6. The total leukocyte counts are between 10.000 to 50.000/mm3 in
35.0% and less than 5, 000/mm3 in 13.0% of total leukemia cases
respectively, and more than 100. 000/mm3 in 63% of the Chronic
Myelocytic Leukemia cases.
7. Blast forms in initial peripneral blood differential count are less than 10 % in 11.8
% of the total acute myelocytic leukemia cases and 22.0% Acute Lymhocytic Leukemis
respectively.
8. The mean values of initial bone marrow differential counts reveal 61.2% of
Myeloblasts and promyelocytes in acute myelocytic leukemia, 63.8 % of lymphoblasts
and immature lymphocytes in Acute Lymphocytic Leukemia and 57.7 % of stab and
segmented neutrophils in Chronic Myelocytic Leukemia respectively.
9. Basophils are increased in Chronic Myelocytic Leukemia, (3.0% in bone marrow, 5.
1% in peripheral blood.
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