Abstract book - ESTRO meets Asia

S108 ESTRO meets Asia 2018

clinical features, ECOG PS status, ECOG PS status group (o-1 versus 2-3), CP class, CP class group (A versus B/C), AFP, AFPx2, size of HCC, and status of HCC influenced survival significantly (p < 0.05). Multivariate analysis revealed that CP class group, AFPx2, and size of HCC were associated with overall survival. Conclusion Our results showed that CP class A, less than AFPx2, and up to 5cm of HCC were significant favorable prognostic factors in BM from HCC receiving RT. Accordingly, the HCC with BMs carrying those factors may benefit from more aggressive therapy. PO-262 Patterns of Practice on Palliative Radiotherapy for Painful Bone Metastases in the Philippines J.K. Jacinto 1 , J. Co 1 , L.B. Co 1 , M.B. Mejia 1 , T. SyOrtin 1 Purpose or Objective Bone metastasis is the most common cause of intractable pain among cancer patients that several need palliative radiotherapy. Numerous fractionations have been utilized and current reviews showed similar symptom relief among these, with more retreatments in single fraction radiotherapy (SFRT). Geographical variations on patterns of practice been published worldwide but none from developing countries in Asia. The objective of this study is to report the perceived effectiveness and utilization of radiotherapy fractionations for painful bone metastases among radiation oncologists in the Philippines. Material and Methods A survey on perception and utilization of fractionations for bone metastasis was given to physicians registered under Philippine Radiation Oncology Society, during the 2017 Best of ASTRO meeting. Follow-up emails were made for non-response. Descriptive statistics, analyses and correlations were reported at 95% level of significance. Results Seventy-six of 99 radiation oncologists completed the survey (Table 1). Among long courses, 30/10 was deemed effective for 91% while 37.5/15 and 40/20 had 61% and 59% respectively. Among short courses, only half (53%) perceived 8GySFRT to be effective, while 20/5 and 36/6 had 47% and 26% respectively. Almost all have utilized 30/10, while 65% have utilized 40/20 and 37.5/15. Less use shorter fractionations with 37%, 33% and 15% have utilized 8Gy SFRT, 20/5 and 36/6 respectively. This study showed that in the Philippines, 30Gy in 10 fractions is the most utilized fractionation scheme in the management of painful bone metastases. This also had the most number of respondents perceiving it to be effective. While about 50% of respondents perceive 8Gy SF-RT to be effective, it only translated to 3% of radiation oncologists using it frequently i.e. “ more often” and “always” (Figure 3) . There is discordance among knowledge and utility of SF-RT among the radiation oncologists who perceived this to be effective. 1 Benavides Cancer Institute- UST Hospital, Radiation Oncology, Manila, Philippines

Conclusion This Philippine survey on palliative radiotherapy patterns of practice for painful bone metastases is consistent with current data in US, Canada and Europe where MF-RT is more commonly utilized. Despite evidences on equivalence of MF-RT and SF-RT, 30Gy in 10 fractions is still the most utilized fractionation scheme and perceived to be the most effective among Filipino radiation oncologists. Only 37% utilize SF-RT and is oftentimes chosen less frequently over longer course regimens. Short course radiotherapy, including 8Gy in 1 fraction, should be considered in adequately selected patients given the workload, cost and healthcare system of the Philippines. Focus on palliative care in training, continuing educational sessions may be beneficial to increase knowledge, information dissemination and subsequent utilization of short course RT. PO-263 To treat or not: 3 years analysis of elderly head and neck cancers treated at a tertiary institute M. Tiwari 1 1 Fortis Memorial Research Institute, Radiation Oncology, Gurgaon, India Purpose or Objective To assess treatment outcomes in head and neck cancer patients in the elderly treated between 2013- 2016 in radiation oncology, Fortis Memorial Research Institute, Gurgaon, India Material and Methods Data analysed for all elderly Head Neck Squamous Cell Cancer (HNSCC) patients treated between 2013- 2016. 68 patients, > 65 years suffering from head and neck cancer (squamous cell) were evaluated. Telephonic follow-up done for all patients in May 2018. Clinical: Elderly