Abstract
We report here a very rare case of chronic myeloid leukemia (CML) with a minor bcr-abl transcript, which developed following long-term chemotherapy with fluorouracil for esophageal carcinoma. A 64-year-old male patient was diagnosed with CML. Four years earlier, he had suffered from esophageal carcinoma, which was treated by surgical resection followed by oral administration of fluorouracil (200 mg/day) for 4 years. Molecular analysis of his Philadelphia chromosome (Ph) using reverse-transcriptase polymerase chain reaction (RT-PCR) and subsequent sequencing revealed a minor bcr-abl transcript. The clinical course of this patient was aggressive with a short chronic phase of CML. This is the first reported case of secondary CML with a minor bcr-abl transcript.
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