Overall survival: worst-case scenario.

<p>All patients who were lost to follow up before treatment (n = 11) or during treatment (n = 2), or who had disease at last moment of follow up (n = 6) are assumed to be death (Log rank p =  0. 142, when comparing patients without distant metastasis: 0–15 vs. 16–30 year). DM  =  distant metastasis at diagnosis; OS  =  overall survival.</p

Radiotherapy treatment.

<p>Radiotherapy treatment.</p

Patient overview.

<p>LTFU =  lost to follow-up.</p

Overall survival: best-case scenario.

<p>All patients who were lost to follow up were censored at the moment of last contact (Log rank is p = 0.021, when comparing patients without distant metastasis: 0–15 vs. 16–30 year). DM  =  distant metastasis at diagnosis; OS  =  overall survival.</p

Complaints at diagnosis and interval between first appearance and diagnosis.

<p>Complaints at diagnosis and interval between first appearance and diagnosis.</p

Overall survival.

<p>Overall survival.</p

Patient & tumor characteristics.

<p>Patient & tumor characteristics.</p