Neglected liposarcoma with late admission and huge tumour causes difficulties regarding surgical removal, obtaining tumour free margin and increased risk of local recurrence. Preoperative irradiation enables the surgeon to remove such tumours with ease of manipulation during surgery by maturation of the pseudocapsule with a decrease in local recurrence. Twenty-one patients with liposarcoma , 8 females, 13 males with a mean age of 49 (16–74) were treated by preoperative 5000 cGy irradiation and wide excision by the same surgeon between 1991–2004. Localization were 14 proximal thigh, 3 popliteal space, 3 gluteal region, 1 upper arm. Mean tumour volume was 550cc. Mean follow up was 37 months (6–144 mo.s). All patients were operated after 30 days of irradiation, 3 patients had arterial by pass and 1 patient had free latissimus dorsi flap reconstruction.