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This study evaluates treatment outcomes for adductor compartment tumors at two medical centers in UK and Canada, comparing surgery followed by radiotherapy versus radiotherapy followed by surgery. Results show significant factors influencing local recurrence and overall survival rates over a 5-year period. The study assesses tumor size, grade, margin status, radiotherapy timing, wound complications, and functional outcomes.
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Adductor Compartment STS- Does method of treatment affect outcome? Anup Pradhan, Yiu-Chung Cheung Birmingham Medical School, UK Supervisors: Mr Robert J Grimer Royal Orthopaedic Hospital, Birmingham, UK Dr Peter Ferguson Mount Sinai Hospital, Toronto, Canada
Background • Presents late • Often large • Neurovascular bundle close
Vessels preserved Big hole !
14 days later… 7 days later…
Aim of the project • To assess outcomes at ROH Birmingham • Survival • Local control • Complications • Function • To compare with a major North American Centre • To determine if different treatment methods affected above outcomes
Treatment philosophies in the two Specialist Regional Centres • ROH, Birmingham, UK • Surgery followed by RT (most cases) • MSH, Toronto • Surgery preceded by RT (most cases) • Frequent use of flaps
Method • Prospective databases • Study period (Jan 1990 – Jan 2001) • Collection of basic data and outcomes • demographic data • Size, grade (tumour) • Treatment methods • Survivorship for LR, OS • Wound complications • TESS for function
Exclusions • Metastases at diagnosis • Previous treatment elsewhere • Patients lost to follow up • Unfit for surgery
ROH MSH Median Age 55yrs Median Age 56.5yrs Patient age distribution P = 0.98
ROH MSH Median = 9.5cm Median = 13cm Tumour size at diagnosis P = 0.11
Factor ROH (n = 64) MSH (n = 62) P-value Mean (median) Age 55 (57) 55 (56.5) 0.98 Mean (median) Size (cm) 13.2 (12.8) 11.4 (9.5) 0.11 Proportion > 10cm 38 (59%) 25 (40%) 0.03 Proportion of high grade tumours 36 (56%) 35 (56%) 0.98 Adequate margins 46 (72%) 44 (71%) 0.91 Pre-operative radiotherapy NIL 26 (42%) Post-operative radiotherapy 60 (94%) 30 (48%) Use of muscle flaps NIL 26 (42%) Patient and Treatment Factors
Factor ROH (n = 64) MSH (n = 62) P-value Length of stay 10.4 11.6 0.50 Wound complications 27 (42%) 14 (23%) 0.019 Local Recurrence (5 Year) 28% 10% 0.015 Metastases (5 Year) 51.5% 38.8% 0.48 Overall survival (5 Year) 58% 74% 0.13 TESS score 72% 79% 0.18 Outcomes Oncological and Functional Outcomes
Comparing OS between the 2 centres P = 0.13 5yr OS = 74% MSH 5yr OS =57% ROH
Overall survival by grade Low/Intermediate grade P < 0.001 High grade
Overall survival by size P = 0.015 Size ≤ 10cm Size > 10cm
Comparison of OS between pre and post RT groups (combined data from both centres) Postop RT Preop RT P = 0.55
Comparing LR between the 2 centres P = 0.0145 5YLR = 10% 5YLR = 28%
Summaryof Overall Findings • OS rate = 66% at 5 yrs • Significant factors • High Grade [HR 5.6, CI 2.3 – 13.5] • Size (< 10cm) [HR 0.41, CI 0.21 – 0.81] • LR rate = 21% at 5yrs • Significant factors • Margin • Functional outcome • Average TESS score – 76% • Worse TESS - wound complications(65% vs.79%) - high grade (70% vs. 84%) • No association with RT timing
Conclusion • OS – unaffected by treatment strategies • RT Timing – no affect on OS, LR, and function • LR – Higher rate in ROH • Positive margins (28%) • quality of RT
Acknowledgements • Supervisors Mr Rob Grimer Dr Peter Ferguson • Mr Seggy Abudu • Dr Anthony Griffin • Medical Records, ROH, Birmingham • Orthopaedic Oncology Team, MSH, Toronto
References • O’Sullivan et al. Preoperative versus postoperative radiotherapy in soft-tissue sarcoma of the limbs: a randomised trial. Lancet 2002; 359(9325): 2235-2241 • Grainger MF, Grimer RJ, Carter SR, Tillman RM. Wound complications following resection of adductor compartment tumours. Sarcoma 5 2001: 203-207 • Davis AM, O’Sullivan B, Bell RS, et al. Function and Health Status Outcomes in a Randomized Trial Comparing Preoperative and Postoperative Radiotherapy in Extremity Soft Tissue Sarcoma. J Clin Oncol 2002; 20: 4472-4477 • Bell RS, O’Sullivan B, Davis A, Langer F, Cummings B, Fornasier VL. Functional Outcome in Patients Treated With Surgery and Irradiation for Soft Tissue Tumours. J Surg Oncol 1991; 48: 224-231 • Gerrand CH, Wunder JS, Kandel RA, O’Sullivan B, Catton CN, Bell RS, Griffin AM, Davis AM. Classification of positive margins after resection of soft-tissue sarcoma of the limb predicts the risk of local recurrence. J Bone Joint Surg Br 2001; 83-B(8): 1149-1155