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Table 6 The distribution of leukemia subtypes among the regions (1999–2013)*

From: The burden of leukemia in the Kingdom of Saudi Arabia: 15 years period (1999–2013)

Regions Central Eastern Madinah Southern Western
Morphology No. % No. % No. % No. % No. %
Precursor B-cell lymphoblastic leukemia 635 21.8 237 16.8 226 18.3 238 19.0 288 15.5
Precursor cell lymphoblastic leukemia, NOS 409 14.1 240 17.1 237 19.1 215 17.1 400 21.5
Chronic myeloid leukemia, NOS 375 12.9 177 12.6 152 12.3 173 13.8 251 13.5
Acute myeloid leukemia, NOS 334 11.5 184 13.1 145 11.7 160 12.8 204 11.0
B-cell chronic lymphocytic leukemia/small lymphocytic lymphoma 275 9.5 111 7.9 89 7.2 113 9.0 155 8.3
Precursor T-cell lymphoblastic leukemia 129 4.4 38 2.7 34 2.7 39 3.1 82 4.4
Acute leukemia, NOS 25 0.9 20 1.4 46 3.7 43 3.4 62 3.3
Acute monocytic leukemia 98 3.4 46 3.3 21 1.7 24 1.9 44 2.4
Acute promyelocytic leukemia, t(15;17)(q22;q11–12) 114 3.9 63 4.5 40 3.2 48 3.8 50 2.7
Leukemia, NOS 20 0.7 45 3.2 81 6.0 25 2.0 45 2.4
Acute myelomonocytic leukemia 74 2.5 30 2.1 26 2.1 27 2.2 42 2.3
Acute myeloid leukemia with maturation 72 2.5 24 1.7 21 1.7 20 1.6 29 1.6
Chronic myelogenous leukemia, BCR/ABL positive 31 1.1 19 1.4 9 0.7 8 0.6 40 2.2
Acute myeloid leukemia without maturation 42 1.4 15 1.1 16 1.3 14 1.1 16 0.9
All others 275 9.5 158 11.2 95 7.7 107 8.5 152 8.2
  1. *p value of < 0.001