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Table 2 Simplified treatment volumes used in patients with T1-T4 laryngeal carcinomas

From: Risk-adapted partial larynx and/or carotid artery sparing modulated radiation therapy of glottic cancer

  PTV1 (64–70 Gy) PTV2 (60 Gy) PTV3 (54 Gy)
T1 Affected laryngeal side (~1/2-2/3 of laryngeal volume) Small region above and below PTV1
T2 Affected laryngeal side (~2/3 of laryngeal volume) Small region above and below PTV1 Level II-V bilaterally (for small T2 tumors no ENI)
T3 Most of the larynx depending on tumor extension (~3/4- 4/5 –entire laryngeal volume) Small region above and below PTV1 Level II-V bilaterally
T4 Whole larynx Small region above and below PTV1 Level II-VI bilaterally
N+ Affected lymph node sites Small region around PTV1 Level II-VI bilaterally
  1. ENI elective node irradiation.