肾上腺原发恶性肿瘤主要包括肾上腺皮质癌(adrenocortical carcinoma,ACC)和嗜铬细胞瘤(phaeochromocytomas,PHEO),两者在临床上较为罕见,但恶性程度较高,治疗手段相对有限。随着分子生物学和影像学技术的快速发展,肾上腺恶性肿瘤的早期诊断和精准评估已取得显著进展,尤其是人工智能技术的引入,为肾上腺肿瘤的精准诊断提供了新的机遇。手术治疗仍是ACC和PHEO的首选治疗方式,然而,随着手术技术的不断进步,腹腔镜手术及机器人辅助手术等新型治疗手段逐渐得到认可并应用于临床。在药物治疗方面,2024年度的研究成果显著,传统化疗、靶向治疗、核素治疗及免疫治疗均取得一定进展,药物联合治疗也显示出良好的临床效果。但多数研究仍集中在Ⅰ期和Ⅱ期临床试验,Ⅲ期研究相对匮乏。本文将回顾并总结2024年度在ACC和PHEO领域的最新研究成果,旨在为肾上腺恶性肿瘤的临床治疗提供新的思路和参考。
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吴侃,李响. 2024年肾上腺癌诊治进展[J].泌尿外科杂志(电子版),2025,17(1):37-47.DOI:10.20020/j.CNKI.1674-7410.2025.01.06
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肾上腺原发恶性肿瘤是指源自肾上腺皮质或髓质的恶性肿瘤,主要包括肾上腺皮质癌(adrenocortical carcinoma,ACC)和嗜铬细胞瘤(phaeochromocytomas,PHEO),在临床上较为罕见。ACC的年发病率约为每百万人0.5~2例[1-2]。PHEO是一类起源于肾上腺髓质嗜铬细胞的神经内分泌肿瘤,而肾上腺外源性嗜铬细胞瘤通常被称为副神经节瘤,两者合并被统称为嗜铬细胞瘤和副神经节瘤(pheochromocytomas and paragangliomas,PPGLs)。目前,PPGLs的年发病率约为每百万2~8例[3]。此外,其他罕见类型的肾上腺恶性肿瘤还包括非霍奇金淋巴瘤、肉瘤和神经母细胞瘤等。
肾上腺癌的生物学行为具有高度异质性,其表现可以是惰性生长,也可能呈现为高度侵袭性,甚至在早期即发生远处转移。这些肿瘤由于缺乏有效的系统性治疗手段,往往预后较差[4]。近年来,随着临床上肾上腺偶发肿瘤的检出率逐渐增加,肾上腺恶性肿瘤的关注度也得到了提升。分子生物学和影像学技术的进步,尤其是人工智能技术的引入,进一步推动了肾上腺恶性肿瘤的精准诊断。在治疗方面,靶向治疗和免疫治疗的探索为晚期肾上腺恶性肿瘤,尤其是ACC和PHEO患者的预后改善和生活质量提升带来了新的希望。四川大学华西医院研究团队新近发表的一项单臂、开放标签的Ⅱ期临床试验结果,评估了PD-1抑制剂卡瑞利珠单抗(camrelizumab)与VEGFR抑制剂阿帕替尼(apatinib)联合治疗晚期ACC的疗效和安全性。结果表明,该联合治疗在晚期ACC患者中表现出较好的疗效和安全性,具有较高的疾病控制率(disease control rate,DCR),值得进一步深入研究[5]。然而,由于肾上腺癌的罕见性,目前针对该疾病的Ⅲ期临床试验仍较为稀缺,现有研究主要集中在大样本回顾性研究及Ⅰ、Ⅱ期临床试验。基于此,本文旨在从诊断、手术治疗、放射治疗以及系统治疗(包括化疗、靶向治疗和免疫治疗)等多个方面,对2024年度ACC和PHEO领域的重要研究成果进行回顾与总结,以期为肾上腺癌的临床诊疗提供新的思路和参考。
1 诊断和病理
1.1 临床诊断
1.2 激素评估
1.3 影像学检查
1.4 病理检查
2 手术治疗
2.1 ACC的手术治疗2.2 PHEO的手术治疗
3 放射治疗
3.1 ACC的放射治疗3.2 PHEO的放射治疗
4 系统治疗
4.1 ACC的药物治疗
4.1.1 传统化疗
4.1.2 靶向治疗
4.1.3 免疫治疗
4.1.4 其他治疗
4.2 PHEO的药物治疗
4.2.1 化学治疗
4.2.2 靶向治疗
4.2.3 免疫治疗
4.2.4 其他治疗
5 结论
肾上腺原发恶性肿瘤在临床上较为罕见,但恶性程度较高,仍是临床诊疗中的难题。尽管这些肿瘤的临床表现存在一定的异质性,且早期可能没有明显症状,但随着影像学技术及分子生物学的进步,尤其是人工智能在诊断中的应用,肾上腺恶性肿瘤的早期发现和精准诊断已经取得了一定进展。然而,由于缺乏有效的治疗手段,ACC和PHEO患者的预后仍然较差,且晚期患者的生存期较短。因此,当前研究的重点不仅集中于提升早期诊断的准确性,还在于探讨更加有效的治疗策略。
手术治疗仍是ACC和PHEO的首选治疗手段,尤其在局限性疾病中,根治性手术(R0切除)是唯一可能治愈的方式。近年来,随着腹腔镜和机器人辅助手术技术的发展,对于特定患者,尤其是早期患者,腹腔镜手术逐渐得到认可,并表现出良好的疗效与较低的并发症发生率[18,24]。尽管如此,腹腔镜手术仍面临较大的争议,尤其在局部晚期患者中,开放手术仍然是更为常见且成熟的选择。对于转移性疾病患者,尽管手术治疗能够显著改善生存期,但仍需结合其他治疗方法如化疗、靶向治疗、免疫治疗等进行综合治疗。
在药物治疗方面,ACC和PHEO的治疗仍面临挑战。米托坦作为ACC治疗的基础药物,但其单药治疗的疗效有限,多数患者仍需联合其他化疗药物进行治疗。FIRM-ACT试验为晚期ACC患者提供了临床治疗的指导,EDP-M方案显示出较好的疗效[31]。然而,米托坦的耐受性问题以及疗效的个体差异,仍然限制了其广泛应用。靶向治疗和免疫治疗的结合正在成为新的治疗方向。尤其是在PD-1抑制剂和VEGFR抑制剂联合治疗晚期ACC的临床试验中,取得了较为积极的初步结果[5]。该结果提示这种联合治疗可能为晚期ACC患者带来新的生存希望,ICI联合治疗的前景值得期待。
对于PHEO的药物治疗,放射性核素治疗如131Ⅰ-MIBG和PRRT也在晚期或转移性PHEO患者中显示了较好的治疗效果,为无法手术的患者提供了有效的治疗选择。近年来,靶向治疗药物如舒尼替尼和阿昔替尼在转移性PHEO中的应用,显示了显著的抗肿瘤活性,尤其在携带SDHB基因突变的患者中,疗效更加显著[43]。然而,现有治疗方案的疗效仍存在一定的局限性,且药物的耐受性和副反应管理仍然是临床实践中的重要问题。
尽管当前的治疗手段在一定程度上改善了ACC和PHEO患者的生存期和生活质量,但总体效果仍未达到理想的治愈水平。未来的研究应更加注重如何通过精准诊断和精准治疗来提高患者的治疗效果,尤其是在靶向治疗和免疫治疗方面。此外,如何优化治疗策略、减少不良反应,并改善患者的生活质量和延长生存期,仍是未来研究的重点方向。
总之,2024年度,肾上腺恶性肿瘤领域的研究取得了重要进展,尤其在ACC和PHEO的诊断、手术治疗、放射治疗及药物治疗等方面。随着分子生物学和影像学技术的不断发展,肾上腺肿瘤的精准诊断得到显著提高,且多种创新治疗策略进入临床试验阶段。在手术治疗方面,腹腔镜手术和机器人辅助手术逐渐成为替代开放手术的重要选择,尤其在早期患者中显示出较好的疗效。药物治疗方面,靶向治疗、免疫治疗及其联合应用已显现出良好的前景,部分临床试验取得了积极结果。然而,尽管如此,目前针对肾上腺恶性肿瘤的Ⅲ期临床试验仍较为稀缺,且治疗手段仍需进一步优化。未来的研究应侧重于个体化治疗策略的深入探索。期望在2025年,肾上腺恶性肿瘤的治疗方案能朝着更加精准和综合的方向发展。
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