18F-FDG-PET/CTを用いた食道癌N1リンパ節転移と放射線治療リンパ節領域範囲

N1 metastases diagnosed by 18F-FDG-PET/CT in esophageal squamous cell cancer and its clinically use for radiation treatment field

根治的放射線化学療法は，食道癌において重要な役割を担い，長期生存者を得ることができる^1）。根治的放射線化学療法は，国内では50～60Gy照射されることが多いが，照射範囲については明確なコンセンサスが得られていない^2）。

We analyzed 48 N1 staged esophageal squamous cell cancer treated with radiotherapy using PET/CT, The location of proximal, distal and central primary tumor were analyzed by the location of suprasternal notch, carina of trachea and esophageal hiatus. The location of regional lymph nodes were classified by Japanese Classification of Esophageal Cancer（11th Edition）and the location of suprasternal notch, carina of trachea and esophageal hiatus.We generated hypotheses of radiation treatment field for N0 esophageal squamous cell cancer.