肝是恶性肿瘤最常见的转移部位之一，其发生率仅次于淋巴结［１］。根据临床和实验室发现，对可疑肝恶性肿瘤患者常须作肝活检；对于已知有原发癌的病人，又出现异常肝扫描或酶学升高等变化，也往往要进行肝活检。然而有２５％以上盲目经皮肝穿刺活检标本未能包含肿瘤，这... The liver is one of the most common metastatic sites of malignant tumors and its incidence is second only to lymph nodes [1]. According to clinical and laboratory findings, liver biopsies are often required for suspicious patients with hepatic malignancies; for patients with known primary cancers, abnormal hepatic scans or enzymatic elevations are also common, and liver biopsies are often performed. However, more than 25% blind percutaneous biopsy specimens failed to contain tumors, which...