右肺部分不张伴正电子发射计算机断层显像浓聚和多肿瘤标志物升高一例并文献复习

分析一例右肺部分不张患者的临床特点、影像学和病理特征，并总结国内有关正电子发射计算机断层显像CT（PET-CT）、多肿瘤标志物检查假阳性的报道。该例患者右肺部分不张，PET-CT检查不张部位浓聚，癌胚抗原、肿瘤标志物CA199、CA242呈进行性升高，但病变部位穿刺活检病理未见恶性肿瘤。经抗炎、化痰等治疗后，肿瘤标志物恢复正常，病变部位复张良好。结果提示PET-CT联合肿瘤标志物检测存在一定的假阳性概率，其原因可能与病变部位炎症反应及腺体分泌有关。

A case report of partial right lung atelectasis with PET-CT concentration and elevated multiple tumor markers increased and literature review

To analyze the clinical characteristics, imaging and pathological features of 1 case with partial right lung atelectasis and summarize the relevant domestic reports on the false positive of positron emission tomography-computed tomography （PET-CT） and tumor markers. The patient was diagnosed by PET-CT as partial atelectasis and there were progressive increases of CEA, CA199 and CA242. But site of lesion biopsy showed no malignancy. After treatments of anti-inflammatory and eliminating phlegm, the tumor markers returned to normal and the lesion site had excellent re-expansion. The detection of PET-CT plus tumor markers may have false positive probability. The reason is probably related with inflammation and glandular secretion of lesion site.