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Table 2 Failure patterns in the 180 patients after treatment

From: Advantages of using reduced-volume intensity modulated radiation therapy for the treatment of nasopharyngeal carcinoma: a retrospective paired study

Patterns of failure CV-IMRT n (%) RV-IMRT n (%)
Recurrence 11 (12.2%) 6 (6.7%)
NP recurrence only 10 (11.1%) 5 (5.6%)
LN regions recurrence only 0 0
NP and LN regions recurrence 1 (1.1%) 1 (1.1%)
In-field failures 8 (8.9%) 5 (5.6%)
Marginal failures 1 (1.1%) 1 (1.1%)
Out-field failures 2 (2.2%) 0
Distant metastasis 10 (11.1%) 11 (12.2%)
Distant metastasis and recurrence 1 (1.1%) 2 (2.2%)
  1. CV-IMRT conventional-volume intensity-modulated radiation therapy, RV-IMRT reduced-volume intensity-modulated radiation therapy, NP nasopharynx, LN lymph node