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Evaluation of the utility of localized adjuvant radiation for node-negative primary cutaneous squamous cell carcinoma with clear histologic margins.
Journal of the American Academy of Dermatology ( IF 13.8 ) Pub Date : 2019-07-23 , DOI: 10.1016/j.jaad.2019.07.048
Emily Stamell Ruiz 1 , Shlomo A Koyfman 2 , Syril Keena T Que 3 , Jason Kass 4 , Chrysalyne D Schmults 1
Affiliation  

BACKGROUND Though the National Comprehensive Cancer Network recommends consideration of localized adjuvant radiation after clear-margin surgery for cutaneous squamous cell carcinoma (cSCC) with large-caliber (≥0.1-mm) nerve invasion (LCNI) and other high-risk features, only a single small study has compared surgery plus adjuvant radiation therapy (S+ART) to surgical monotherapy (SM) for cSCC. OBJECTIVE Compare S+ART to SM for primary cSCCs with LCNI and other risk factors. METHODS Matched retrospective cohort study of primary cSCCs (matched on sex, age, immune status, type of surgery, diameter, differentiation, depth, and LCNI) treated with S+ART versus SM. A subgroup analysis of cSCCs with LCNI was performed. RESULTS In total, 62 cSCCs were included in matched analysis (31 S+ART and 31 SM) and 33 cSCCs in the LCNI analysis (16 S+ART and 17 SM). There were no significant differences in local recurrence, metastasis, or death from disease in either analysis. Risk of local recurrence was low (8%, 7/89), with 3 of the local recurrences being effectively treated upon recurrence. LIMITATIONS Single academic center and nonrandomized design. CONCLUSION Adjuvant radiation did not improve outcomes compared with SM due to a low baseline risk of recurrence, although adjuvant radiation for named nerve invasion and LCNI of ≥3 nerves has been shown to improve outcomes in a prior study. Randomized studies are needed to define the subset of cSCC for whom adjuvant radiation has utility.

中文翻译:

评估局部辅助放疗对组织学边缘清晰的淋巴结阴性原发性皮肤鳞状细胞癌的效用。

背景 尽管国家综合癌症网络建议在对具有大口径(≥0.1 毫米)神经侵犯 (LCNI) 和其他高风险特征的皮肤鳞状细胞癌 (cSCC) 进行清缘手术后考虑局部辅助放疗,但只有一项小型研究比较了 cSCC 的手术加辅助放疗 (S+ART) 与手术单一疗法 (SM)。目的 将 S+ART 与 SM 比较用于具有 LCNI 和其他风险因素的原发性 cSCC。方法 对接受 S+ART 与 SM 治疗的原发性 cSCC(在性别、年龄、免疫状态、手术类型、直径、分化、深度和 LCNI 方面匹配)进行匹配回顾性队列研究。对具有 LCNI 的 cSCC 进行了亚组分析。结果 总共有 62 个 cSCC 被纳入匹配分析(31 个 S+ART 和 31 个 SM),33 个 cSCC 被纳入 LCNI 分析(16 个 S+ART 和 17 个 SM)。在任一分析中,局部复发、转移或疾病死亡均无显着差异。局部复发的风险很低 (8%, 7/89),其中 3 例局部复发在复发后得到有效治疗。局限性 单一学术中心和非随机设计。结论 与 SM 相比,由于复发的基线风险较低,辅助放疗并未改善结果,尽管在先前的研究中已证明针对指定神经侵犯和 LCNI ≥ 3 条神经的辅助放疗可改善结果。需要随机研究来确定辅助放疗对哪些 cSCC 有用。其中3例局部复发在复发后得到有效治疗。局限性 单一学术中心和非随机设计。结论 与 SM 相比,由于复发的基线风险较低,辅助放疗并未改善结果,尽管在先前的研究中已证明针对指定神经侵犯和 LCNI ≥ 3 条神经的辅助放疗可改善结果。需要随机研究来确定辅助放疗对哪些 cSCC 有用。其中3例局部复发在复发后得到有效治疗。局限性 单一学术中心和非随机设计。结论 与 SM 相比,由于复发的基线风险较低,辅助放疗并未改善结果,尽管在先前的研究中已证明针对指定神经侵犯和 LCNI ≥ 3 条神经的辅助放疗可改善结果。需要随机研究来确定辅助放疗对哪些 cSCC 有用。
更新日期:2020-01-11
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