[A case of RAEB in transformation successfully treated by low-dose Ara-C treatment].
A 65-year-old male admitted to the Anjo Kosei Hospital due to pancytopenia. The findings at the time of admission were; leukocyte count 2,000/microliters, erythrocyte count 1,580,000/microliters, and platelet count 88,000/microliters. Bone marrow specimen revealed mild hypocellularity with 26% of the blast cells. He was diagnosed RAEB in transformation. Chromosome analysis showed 46, XY, -7, +8, -17, + marker in three cells and 45, XY, -7, -17, + marker in two cells out of five cells. He was treated with the low-dose Ara-C (20mg/body s.c. injections every 12 hrs) for 9 days. Twenty five days later, the blast cells in the bone marrow decreased to 4%, and the complete remission was obtained. The duration of remission is 27+ weeks. At the time of complete remission, the bone marrow cells showed the normal karyotype. In this case, the effect of low-dose Ara-C to the blast cells may have not resulted from induction of differentiation but cytocydal action.
K
K
Yamamoto
Y
Y
Ono
T
T
Ito
M
M
Saito
K
K
Nagata
O
O
Kamiya
K
K
Ohara
A
A
Hoshino
D000368:Aged; D000754:Anemia, Refractory, with Excess of Blasts / Q000188:drug therapy*; D003561:Cytarabine / Q000627:therapeutic use*; D006801:Humans; D008297:Male
D003561:Cytarabine