Tail of superficial myxofibrosarcoma and undifferentiated pleomorphic sarcoma after preoperative radiotherapy

Abstract

Background/Aim: Superficial myxofibrosarcoma (MFS) and undifferentiated pleomorphic sarcoma (UPS) are highly associated with infiltrative growth (tail sign) and local recurrence, but the impact of preoperative radiotherapy is uncertain. Patients and Methods: Eight consecutive superficial MFS and 10 superficial UPS cases treated with preoperative radiotherapy and surgery were reviewed. Pathological response, surgical margin and magnetic resonance imaging (MRI) were retrospectively evaluated. Oncological events were reported in a descriptive form. Results: Pathologically, nearly-complete response was observed in six UPS cases. Tail sign was pathologically detected in 13 cases, eight of which r..