Departamento de Cirugia General y Digestiva, Hospital Ramón y Cajal, Madrid, Spain. plpunisa@mixmail.com
Abstract:
Ewing's sarcoma/primitive neuroectodermal tumour (ES/PNET) belongs to the group of paediatric small round blue-cell tumours. ES/PNET is classically a tumour of the soft tissue or bone in children and young adults. The case of a 21-year-old woman with a retroperitoneal localisation of Ewing's sarcoma is described.