A third possibility is delayed fixation and false negative results for the primary tumor, which could explain some of the gain of ER in recurrence.

第三个可能的原因是原发肿瘤延迟固定和假阴性结果，这个能解释复发病灶的ER阳性表达。

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Timing is important because inflammation, which is present in the early weeks following treatment of the tumor, can cause false positive PET scans.

时间非常重要，因为在肿瘤治疗后早期炎症能使PET扫面出现假阳性。

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Conclusion Joint detection of different tumor markers will increase the specificity of the immunoassay and lower its rate of false positivity.

结论多项肿瘤标志物联合检测可提高特异性，降低假阳性率。

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