可切除大肝癌TACE后手术切除标本的病理研究

目的 探讨可切除大肝癌TACE后手术切除标本的病理改变及其意义。方法 2002年1月～2003年1月收治的83例可切除大肝癌患者随机分成术前TACE组(36例)与一期手术组(47例)，术前TACE组31例二期切除(二期手术组)，5例失去手术切除机会，78例术后病理均证实为肝细胞癌。对比两组标本间主瘤、包膜、子灶、癌栓、肝硬化等病理情况。结果 TACE组除较一期手术组肿瘤坏死广泛、包膜更完整外，两组间子灶及门脉癌栓发生率、肝外浸润转移无显著差异；TACE组TACE后肿瘤体积缩小并不显著，子灶、门脉癌栓完全坏死者少，肝硬化加重。结论 可切除大肝癌术前TACE不能使肿瘤完全坏死，部分患者耽误手术时机，应严格选择应用。

Pathological Study of Excised Specimens from Resectable Large Hepatocellular Carcinoma after Transcatheter Arterial Chemoembolization

Objective: To investigate pathological changes in surgically excised specimens from resectable large hepatocellular carcinoma (HCC) after transcatheter arterial chemoembolization (TACE ) and their signi?cance. Methods: From January 2002 to January 2003, 83 patients with resectable large HCC were randomized into two groups: group A, 36 patients who underwent preoperative TACE, and group B, 47 patients who underwent one-stage operation without TACE. Hepatectomy was performed in 31 patients of group A (two-stage operation group) and 47 patients of group B (one-stage operation group). The remaining 5 patients in group A were not operable. The diagnosis of HCC was pathologically con?rmed in all 78 patients after hepatectomy. Pathological changes of the excised specimens between the two groups were compared, including main tumors, capsular containment, daughter nodules, tumor thrombi and liver cirrhosis. Results: There were no signi?cant di?erences in the incidence of daughter nodules , portal vein tumor thrombi (PVTT) and extrahepatic metastasis between the two groups, but the area of main tumor necrosis was more extensive and the rate of encapsulation was higher in two-stage operation group than those in one-stage operation group. No signi?cant shrinkage in the average tumor size was seen in two- stage operation group, where daughter nodules and PVTT necrosis were less, and liver cirrhosis was more serious. Conclusion: Preoperative TACE for resectable large HCC should be used on the basis of strict selection because it does not provide complete tumor necrosis and may result in delayed surgery in some cases.