Locoregional Residual Esophageal Cancer after Neo-adjuvant Chemoradiotherapy and Surgery Regarding Anatomic Site and Radiation Target Fields A Histopathologic Evaluation Study

被引:5
作者
Faiz, Zohra [1 ]
Kats-Ugurlu, Gursah [2 ]
Mui, Veronique E. M. [3 ]
Karrenbeld, Arend [2 ]
Burgerhof, Hans G. M. [4 ]
Plukker, John T. M. [1 ]
Muijs, Christel T. [3 ]
机构
[1] Univ Groningen, Dept Surg Oncol, Univ Med Ctr Groningen, Groningen, Netherlands
[2] Univ Groningen, Univ Med Ctr Groningen, Dept Pathol, Groningen, Netherlands
[3] Univ Groningen, Univ Med Ctr Groningen, Dept Radiat Oncol, Groningen, Netherlands
[4] Univ Groningen, Univ Med Ctr Groningen, Dept Epidemiol, Groningen, Netherlands
关键词
esophageal cancer; neoadjuvant CRT; site residual tumor; SQUAMOUS-CELL CARCINOMA; PATHOLOGICAL COMPLETE RESPONSE; PREOPERATIVE CHEMORADIOTHERAPY; TUMOR-REGRESSION; SURVIVAL; TOMOGRAPHY; MORTALITY; THERAPY; AGE;
D O I
10.1097/SLA.0000000000004242
中图分类号
R61 [外科手术学];
学科分类号
摘要
Objective: Neoadjuvant chemoradiotherapy followed by surgery establishes a considerable pathologic complete response (pCR) in EC. The aim was to determine site of residual tumor and its prognostic impact. Summary Background Data: High rates of residual tumor in the adventitial region even inside the radiation fields will influence current decision-making. Methods: We evaluated resection specimens with marked target fields from 151 consecutive EC patients treated with carboplatin/paclitaxel and 41.4Gy between 2009 and 2018. Results: In radically resected (R0) specimens 19.8% (27/136) had a pCR (ypT0N0) and 14% nearly no response (tumor regression grade: tumor regression grade 4-5). Residual tumor commonly extended in or restricted to the adventitia (43.1%; 47/109), whereas 7.3% was in the mucosa (ypT1a), 16.5% in the submucosa (ypT1b) and 6.4% only in lymph nodes (ypT0N+). Macroscopic residues in R0-specimens of partial responders (tumor regression grade 2-3: N = 90) were found in- and outside the gross tumor volume (GTV) in 33.3% and 8.9%, and only microscopic in- and outside the clinical target volume in 58.9% and 1.1%, respectively. Residual nodal disease was observed proximally and distally to the clinical target volume in 2 and 5 patients, respectively. Disease Free Survival decreased significantly if macroscopic tumor was outside the GTV and in ypT2-4aN+. Conclusions: After neoadjuvant chemoradiotherapy, pCR and ypT1aN0 were seen in a limited number of R0 resected specimens (19.8% and 7.3%, respectively), whereas 6.4% had only nodal disease (yT0N+). Disease Free Survival decreased significantly if macroscopic residue was outside the GTV and in responders with only nodal disease. Therefore, we should be cautious in applying wait and see strategies.
引用
收藏
页码:E759 / E765
页数:7
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