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本文分析扫描后误诊为肝肿瘤的22例,误诊率为11.6%(假阳性占6.9%,假阴性占4.7%)。误诊的主要原因是:(1)现有扫描机对微小病灶分辨能力低;(2)肝内非肿瘤疾病、肝脏正常变异、肝脏邻近器官和组织的肿瘤对肝脏造成压迫,均可引起假阴性或假阳性扫描图。作者着重讨论了肝扫描与临床症状、病史、体征、X 线-CT,超声断层和甲胎蛋白等检查相结合对减少误诊的重要作用。
This article analyzed 22 cases misdiagnosed as liver tumors after scan. The misdiagnosis rate was 11.6% (false positive accounted for 6.9%, false negative accounted for 4.7%). The main causes of misdiagnosis are: (1) Existing scanners have low resolving power for fine lesions; (2) Non-neoplastic diseases in the liver, normal liver variability, and tumors in adjacent organs and tissues of the liver cause oppression of the liver, which can cause false negatives. Or false positive scans. The authors focused on the important role of combination of liver scans with clinical symptoms, medical history, physical signs, X-ray computed tomography, ultrasonic tomography, and alpha-fetoprotein testing to reduce misdiagnosis.