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Table 1 Patient and disease characteristics of 198 NPC patients with lung metastasis

From: Prognosticators and Risk Grouping in Patients with Lung Metastasis from Nasopharyngeal Carcinoma: A more accurate and appropriate assessment of prognosis

Characteristics No. of Patients %
Gender   
   Male 156 78.8
   Female 42 21.2
Age (years)   
   Median   44.5
   Range   20-80
   ≤45 108 54.5
   >45 90 45.5
VCA-IgA   
   ≤1:320 119 60.1
   >1:320 79 39.9
EA-IgA   
   ≤1:40 128 64.6
   >1:40 70 35.4
Histology (WHO)   
   Type I 3 1.5
   Type II 62 31.3
   Type III 133 67.2
AJCC (2002)   
   T classification   
T1-T2 83 41.9
T3-T4 115 58.1
   N classification   
N0-N1 115 58.1
N2-N3 83 41.9
   Overall stage   
I 5 2.5
II 43 21.7
III 108 54.5
IV 42 21.3
Site of metastases   
   Unilateral 94 47.5
   Bilateral 104 52.5
Number of metastases   
   Solitary 65 32.8
   Multiple 133 67.2
Size of metastases   
   ≤3 cm 142 71.7
   >3 cm 56 28.3
Mediastinal nodal metastases   
   Absent 121 61.1
   Present 77 38.9
Locoregional recurrence   
   Absent 175 88.4
   Present 23 11.6
Secondary metastases   
   Absent 149 75.3
   Present 49 24.7
DFI (months)   
   ≤24 108 54.5
   >24 90 45.5
Primary treatment   
   Radiotherapy 69 34.8
   Chemoradiotherapy 129 65.2
  1. Abbreviation: NPC, nasopharyngeal carcinoma; WHO: World Health Organisation; AJCC: American Joint Committee Cancer; DFI: disease-free interval.
  2. A mass in diameter.
  3. Size in the short-axis diameter.