Skip to main content

Table 3 Comparison of tumor invasion in patients with pNPC and rNPC

From: Local failure patterns for patients with nasopharyngeal carcinoma after intensity-modulated radiotherapy

Tumor invasion Invasion in pNPC and rNPC (case) Invasion in pNPC alone (case) Invasion in rNPC alone (case) No invasion in pNPC and rNPC (case) P-value
Nasopharynx 25 7 0 0 0.008
Oropharynx 3 3 2 24 0.655
Nasal cavity 6 1 6 19 0.059
Laryngopharynx 0 0 2 30 0.157
Soft palate 0 0 3 29 0.083
Parapharyngeal space 11 13 0 8 <0.001
Longus capitis 5 9 4 14 0.052
Retropharyngeal space 6 14 1 11 0.001
Skull base 15 4 4 9 1.000
Sphenoid sinus 3 5 7 17 0.564
Ethmoid sinus 1 0 8 23 0.005
Masticator space 1 3 3 25 1.000
Cavernous sinus 2 2 3 25 0.655
Intracranial 1 0 2 29 0.157
  1. Abbreviations: pNPC primary nasopharyngeal carcinoma, rNPC recurrent nasopharyngeal carcinoma.