title: Successful complete resection of Ewing sarcoma arising from the bladder in a 10-year-old boy after chemotherapy.
abstract: Ewing sarcoma (ES) of the bladder is extremely rare. Here we report the successful treatment of the youngest case of ES arising from bladder encountered to date and a literature review. A 10-year-old boy who presented with polyuria and lower abdominal swelling was found to have a 13 cm mass arising from the bladder localized to the center of the lower abdomen. Biopsy confirmed ES. Following chemotherapy, the mass shrank to 5 cm and was found to be localized to the right side of the bladder with invasion of the right vas deferens. One-third of the right side of the bladder and part of the right vas deferens were resected. No viable cancer cells were detected in the resected specimen, and the surgical margins were reported to be negative. The patient is currently well with no recurrence or metastases after 11 months. There are 12 cases of Ewings sarcoma arising from the bladder reported in the English literature; two cases in children. Our case will be the third pediatric case and the youngest.
authors: Department of General Pediatrics and Urogenital Surgery, Juntendo University School of Medicine, Tokyo, Japan.
authors: Ryo
authors: R
authors: Sueyoshi
authors: Manabu
authors: M
authors: Okawada
authors: Junya
authors: J
authors: Fujimura
authors: Masahiro
authors: M
authors: Saito
authors: Hiroyuki
authors: H
authors: Koga
authors: Geoffrey J
authors: GJ
authors: Lane
authors: Atsuyuki
authors: A
authors: Yamataka
mesh_terms: D002648:Child; D003131:Combined Modality Therapy; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D012512:Sarcoma, Ewing / Q000188:drug therapy / Q000601:surgery*; D016896:Treatment Outcome; D001743:Urinary Bladder / Q000601:surgery*