Chemotherapy-induced Necrosis in Ewing Sarcoma

Chemotherapy-induced Necrosis in Ewing Sarcoma: Which is the Best Scoring Tool

This is single institution cases series review of histological and clinical data

Investigators will retrieve from the database of the Rizzoli institute all the cases with a histological diagnosis of Ewing sarcoma from 01 Jan 1982 to 31 Dic 2012

Inclusion Criteria:

1. Male and female patients surgically treated at Rizzoli Institute from 01 Jan 1982 to 31 Dic 2012
2. Patients with diagnosis of Ewing sarcoma of bone who have had neo-adjuvant chemotherapy
3. Diagnosis of Ewing sarcoma localized

Exclusion Criteria:

1. Metastatic disease at presentation
2. Soft tissue origin
3. Radiotherapy before surgery