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Table 1 Characteristics of 30 patients with nasopharyngeal carcinoma with suspicious RLN metastasis

From: Ultrasound-guided fine needle aspiration of retropharyngeal lymph nodes after radiotherapy for nasopharyngeal carcinoma: a novel technique for accurate diagnosis

Characteristics n (%)
Sex
 Male 25 (83.3)
 Female 5 (16.7)
T stage of initial diagnosis on MRI
 T1  
 T2 12 (40.0)
 T3 13 (43.3)
 T4 5 (16.7)
N stage of initial diagnosis on MRI
 N0 3 (10.0)
 N1 14 (46.7)
 N2 8 (26.7)
 N3 5 (16.7)
RLN metastasis detected in the initial diagnosis on MRI
 Yes 19 (63.3)
 No 11 (36.7)
Recurrent disease site detected via MRI
 Right lateral RLN 13 (43.3)
 Left lateral RLN 16 (53.3)
 Medial RLN 1 (3.3)
Previous chemo/radiotherapy regime
 Neoadjuvant chemotherapy plus radiotherapy 7 (23.3)
 Radiotherapy plus adjuvant chemotherapy 6 (20.0)
 Concomitant chemo-radiotherapy 16 (53.3)
 Radiotherapy only 1 (3.3)
Previous chemotherapy agent
 Cisplatin only 16 (53.3)
 5-flurouracil + cisplatin 8 (26.7)
 Paclitaxel + carboplatin 5 (16.7)
Previous radiotherapy
 Two-dimensional radiotherapy 18 (60.0)
 Three-dimensional conformal radiotherapy 6 (20.0)
 Intensity-modulated radiotherapy 6 (20.0)
Duration between chemo-radiotherapy and detection of suspicious recurrent RLN
 6–12 months 6 (20.0)
 1–3 years 13 (43.3)
 4–5 years 5 (16.7)
 5–10 years 5 (16.7)
 > 10 years 1 (3.3)
  1. RLN retropharyngeal lymph node, MRI magnetic resonance imaging