Geriatric high-grade soft tissue sarcoma (G-HG STS): An analysis of 116 patients (pts) evaluating prognostic factors and clinical outcomes stratified by histology.

10051 Background: STS in geriatric pts is not well studied. We evaluated prognostic factors and clinical outcomes in elderly pts with HG STS. Methods: Single centre retrospective study. G-HG STS pts defined as age > 65 yrs seen in our centre from 2002 - 2011 with complete medical records were identified. Charlson age-comorbidity score was assessed for each pt. Results: 116 pts from 4 most common HG STS histo-types representing 69% of pts in the geriatric STS cohort were analysed; leiomyosarcoma (LMS, 14%), non well-differentiated liposarcoma (nWD-LPS, 9%), angiosarcoma (AS, 30%), and undifferentiated pleomorphic sarcoma (UPS, 47%). Median age was 72 yrs, 81% presented with localised disease; of 78% of these localised pts who had curative surgery, 49% received adjuvant therapy, of whom 92% had radiotherapy (RT) only. AS arises more commonly from the head/neck region (p<0.001) and fewer receive curative surgery (p=0.006). In 43 pts who had metastases either at diagnosis or relapse, 33% received first-line p...