Gallego, Soledad Infantile fibrosarcoma of the retroperitoneum: a site of unfavorable prognosis? [electronic resource] - Pediatric hematology and oncology Aug 2011 - 451-3 p. digital Publication Type: Case Reports; Journal Article ISSN: 1521-0669 Standard No.: 10.3109/08880018.2010.543450 doi Subjects--Topical Terms: FemaleFibrosarcoma--diagnosisHumansInfantMaleOncogene Proteins, Fusion--geneticsPrognosisRetroperitoneal Neoplasms--diagnosis