Objective: To analyze the diagnosis of 3 cases of leukemia applying for the diagnosis of occupational radiogenic neoplasms. Methods: Retrospective analysis the occupational history, the disease history and the probability of causation (PC value) information of 3 radiological workers. Results: Two cases' PC value of 95% confidence limit of were >50%, and they were diagnosed as radiogenic neoplasms. One case was <50% and diagnosed as nonoccupational radiogenic neoplasms. Conclusion: The probability of causation analysis has important guiding significance for the diagnosis of occupational radiogenic neoplasms. Radiological workers should improve their awareness of self-protection and reduce the occurrence of occupational diseases.
目的： 对申请职业性放射性肿瘤诊断的3例白血病进行诊断情况分析。 方法： 回顾分析3例放射工作人员职业史、患病史及病因概率PC值（probability of causation）计算资料。 结果： 2例患者经计算得到95%可信限上限的PC值>50%，诊断为职业性放射性肿瘤。1例患者95%可信限上限PC值<50%，诊断为非职业性放射性肿瘤。 结论： 病因概率分析对职业性放射性肿瘤的诊断有重要的指导意义；放射工作人员需提高自身防护意识，减少职业病的发生。.
Keywords: Leukemia; Occupational diseases; Probability of causation; Radiogenic neoplasms.