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Table 1 The clinicopathologic characteristics of 45 patients who were diagnosed with radiation-induced osteosarcoma of the maxilla and mandible (RIOSM) after undergoing radiotherapy for nasopharyngeal carcinoma

From: Radiation-induced osteosarcoma of the maxilla and mandible after radiotherapy for nasopharyngeal carcinoma

Characteristic No. of patients (%)
Sex
 Men 33 (73.3)
 Women 12 (26.7)
Age (years)
 ≤49 21 (46.7)
 >49 24 (53.3)
Tumor size (cm)
 ≤5 22 (48.9)
 >5 23 (51.1)
Tumor site
 Maxilla 33 (73.3)
 Mandible 12 (26.7)
Latency period (years)
 ≤8.0 23 (51.1)
 >8.0 22 (48.9)
Margin statusa
 Negative 24 (61.5)
 Positive 15 (38.5)
  1. aOnly 39 of 45 patients underwent surgery