Fig. 3A–B.

Prognostic significance of age of the patients and radiation therapy is shown. (A) Comparison of patients younger than 30 years and those older than 30 years. Of 30 patients who presented without metastatic disease, 14 patients were younger than 30 years old. Overall survival of these 14 and the remaining 16 patients older than 30 years was estimated using the Kaplan-Meier plots. A statistically significant difference was noted between the groups by the log-rank test (p = 0.039). (B) Comparison of patients treated with radiation and those without. Of 28 patients who had presented without metastatic disease and had undergone excision of the primary tumor, 10 patients received radiotherapy. Local recurrence-free survival of these 10 and the remaining 17 patients was estimated using Kaplan-Meier plots. The date that the histological diagnosis was made was used as “time 0.” A statistically significant difference was noted between the groups by the log-rank test (p = 0.037).