[A patient with clinically de novo Ph-positive acute lymphoblastic leukemia had Ph chromosome in all metaphases at the time of hematological remission].
A 58-year-old man was referred to our hospital because of his refractory leukemia. Laboratory examinations showed mild anemia and leukocytosis but no blast was seen in the blood. The patient's bone marrow was hyperplastic and 64.8% of marrow cells were lymphoblastoid cells. They were positive for CD10, CD19, CD34 and HLA-DR antigen. Cytogenetic analysis revealed the Ph chromosome in 17 of 20 metaphases. A Southern blot analysis demonstrated no rearrangement of M-BCR gene. A diagnosis of Ph-positive ALL was made. The patient received chemotherapy and reached a complete remission. At that time, however, his marrow cells had Ph chromosome in 7 of 7 metaphases and rearrangement of m-BCR was positive in PCR analysis. He died of septic shock during the intensive consolidation therapy. Clinically this patient seems to have de novo Ph-positive ALL though his marrow cells had Ph chromosome in all metaphases at the time of complete remission. Recently the rare cases of Ph-positive CML with an m-BCR breakpoint are reported in the literature. This patient may have such a type of CML in blastic phase.
Fujiwara
M
M
Department of Internal Medicine, Nagaoka Red Cross Hospital.
Soga
N
N
Kurokawa
I
I
D001752:Blast Crisis; D001854:Bone Marrow Cells; D017809:Fatal Outcome; D015321:Gene Rearrangement; D006801:Humans; D008297:Male; D008677:Metaphase; D008875:Middle Aged; D009857:Oncogenes / Q000235:genetics; D010677:Philadelphia Chromosome; D054198:Precursor Cell Lymphoblastic Leukemia-Lymphoma / Q000097:blood / Q000235:genetics / Q000473:pathology*