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However, full blood count demonstrated a significant anaemia, which together with the tenderness around the pelvis was not in keeping with this diagnosis. Surgical washout was therefore delayed to obtain a MRI scan of the pelvis. The scan revealed a 5\u00d75\u00d73\u2005cm necrotic soft tissue mass within the gluteal muscles, arising from the right ilium, which biopsy confirmed to be a Ewing's sarcoma.<\/jats:p>","DOI":"10.1136\/bcr-2015-213782","type":"journal-article","created":{"date-parts":[[2016,1,21]],"date-time":"2016-01-21T12:22:20Z","timestamp":1453378940000},"page":"bcr2015213782","update-policy":"https:\/\/doi.org\/10.1136\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":1,"title":["Ewing's sarcoma of the pelvis: an unusual, but not to be missed, cause of an irritable hip"],"prefix":"10.1136","volume":"2016","author":[{"given":"Partha","family":"Ray","sequence":"first","affiliation":[{"name":"Department of Trauma and Orthopaedic Surgery, Norfolk and Norwich University Hospital, Norwich, UK"},{"name":"Department of Surgery, James Paget University Hospital, Gorleston-on-Sea, UK"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Julekha","family":"Girach","sequence":"additional","affiliation":[{"name":"Norwich Medical School, University of East Anglia, Norwich, UK"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Anish Pradip","family":"Sanghrajka","sequence":"additional","affiliation":[{"name":"Department of Trauma and Orthopaedic Surgery, Norfolk and Norwich University Hospital, Norwich, UK"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"239","published-online":{"date-parts":[[2016,1,21]]},"reference":[{"key":"2025082623024148000_2016.jan21_1.bcr2015213782.1","doi-asserted-by":"publisher","DOI":"10.1186\/1546-0096-7-1"},{"key":"2025082623024148000_2016.jan21_1.bcr2015213782.2","doi-asserted-by":"crossref","first-page":"1662","DOI":"10.2106\/00004623-199912000-00002","article-title":"Differentiating between septic arthritis and transient synovitis of the hip in children: an evidence-based clinical prediction algorithm","volume":"81","author":"Kocher","year":"1999","journal-title":"J Bone Joint Surg Am"},{"key":"2025082623024148000_2016.jan21_1.bcr2015213782.3","doi-asserted-by":"publisher","DOI":"10.2106\/JBJS.E.00216"},{"key":"2025082623024148000_2016.jan21_1.bcr2015213782.4","doi-asserted-by":"publisher","DOI":"10.1302\/0301-620X.92B9.24286"},{"key":"2025082623024148000_2016.jan21_1.bcr2015213782.5","doi-asserted-by":"publisher","DOI":"10.1302\/0301-620X.93B11.26857"},{"key":"2025082623024148000_2016.jan21_1.bcr2015213782.6","doi-asserted-by":"publisher","DOI":"10.1097\/BPB.0000000000000134"},{"key":"2025082623024148000_2016.jan21_1.bcr2015213782.7","doi-asserted-by":"publisher","DOI":"10.1136\/emj.18.1.25"},{"key":"2025082623024148000_2016.jan21_1.bcr2015213782.8","doi-asserted-by":"crossref","first-page":"nihpa116823","DOI":"10.3810\/psm.2008.12.11","article-title":"Osteomyelitis: approach to diagnosis and treatment","volume":"36","author":"Fritz","year":"2008","journal-title":"Phys Sportsmed"},{"key":"2025082623024148000_2016.jan21_1.bcr2015213782.9","doi-asserted-by":"publisher","DOI":"10.1128\/CVI.00330-07"},{"key":"2025082623024148000_2016.jan21_1.bcr2015213782.10","first-page":"681","article-title":"Reactive arthritis triggered by Yersinia enterocolitica: a review of 18 pediatric cases","volume":"12","author":"Taccetti","year":"1994","journal-title":"Clin Exp Rheumatol"},{"key":"2025082623024148000_2016.jan21_1.bcr2015213782.11","doi-asserted-by":"publisher","DOI":"10.1016\/S0140-6736(07)60363-8"},{"key":"2025082623024148000_2016.jan21_1.bcr2015213782.12","doi-asserted-by":"publisher","DOI":"10.4076\/1757-1626-2-6487"},{"key":"2025082623024148000_2016.jan21_1.bcr2015213782.13","doi-asserted-by":"publisher","DOI":"10.1200\/JCO.2009.22.9864"},{"key":"2025082623024148000_2016.jan21_1.bcr2015213782.14","doi-asserted-by":"crossref","first-page":"123","DOI":"10.1097\/00003086-199208000-00021","article-title":"Acute septic arthritis of the hip joint in infancy and childhood","volume":"281","author":"Bennett","year":"1992","journal-title":"Clin Orthop Relat Res"},{"key":"2025082623024148000_2016.jan21_1.bcr2015213782.15","first-page":"651","article-title":"Neuroblastoma: a differential diagnosis of irritable hip","volume":"72","author":"Mohan","year":"2006","journal-title":"Acta Orthop Belg"},{"key":"2025082623024148000_2016.jan21_1.bcr2015213782.16","first-page":"461","article-title":"Hip pain and childhood malignancy","volume":"8","author":"Wong","year":"2002","journal-title":"Hong Kong Med J"},{"key":"2025082623024148000_2016.jan21_1.bcr2015213782.17","first-page":"929","article-title":"Pediatric update #16. 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