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小児急性リンパ性白血病の精巣再燃例を報告した.予後の改善に伴う腫瘤形成白血病発現の場として精巣が注目され,白血病治療における重要な問題となっているが,まだ報告は少ない.本例は精巣摘出術後,放射線照射に加えて強力な再寛解導入療法を施行し,現在維持療法中で,腫瘤形成4ヵ月後の現在経過良好である.
A 6-year-old boy with acute lymphoblastic leukemia since 5 months after birth developed testicular invasion. The patient received left orchidectomy plus total dose of 24 gray irradiation and re-induction therapy. There has been no evidence of relapse during 4 months after the surgery. The testicle is the third most common site of relapse in acute lymphoblastic leukemia, following bone marrow and the central nervous system in frequency. Children with testicular relapse tend to have a poor prognosis, with rapid involvement of bone-marrow or extramedullary sites.
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