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Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành y học dành cho các bạn tham khảo đề tài: Ewing sarcoma of the mandible mimicking an odontogenic abscess – a case report | Head Face Medicine BioMed Zentral Case report Open Access Ewing sarcoma of the mandible mimicking an odontogenic abscess - a case report Martin Gosau1 Daniel Baumhoer2 Stefan Ihrler3 Johannes Kleinheinz 4 and Oliver Driemel1 Address department of Cranio-Maxillo-Facial Surgery University of Regensburg Germany 2Institute of Pathology University of Basel Switzerland 3Institute of Pathology University of Munich Germany and department of Cranio-Maxillo-Facial Surgery University of Munster Germany E-mail Martin Gosau - martin.gosau@klinik.uni-regensburg.de Daniel Baumhoer - dbaumhoer@mac.com Stefan Ihrler - Stephan.Ihrler@lrz.uni-muenchen.de Johannes Kleinheinz - Johannes.Kleinheinz@ukmuenster.de Oliver Driemel - oliver.driemel@klinik.uni-regensburg.de Corresponding author Published 05 November 2008 Received 15 August 2008 Head Face Medicine 2008 4 24 doi 10.1186 1746- I60X-4-24 Accepted 5 November 2008 This article is available from http www.head-face-med.com content 4 1 24 2008 Gosau et al licensee BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License http creativecommons.org licenses by 2.0 which permits unrestricted use distribution and reproduction in any medium provided the original work is properly cited. Abstract Ewing sarcoma ES of the mandible is rare and can be mistaken for inflammation of dental origin. We present a 24-year old male patient which underwent radical tumour surgery and primary reconstruction with a microvascular osteoseptocutaneous free fibular flap as well as postoperative adjuvant chemotherapy. Incomplete osseous tumour resection required a second intervention. This case report recapitulates the clinical and histopathological findings in oral ES demonstrates its sometimes difficult diagnosis and discusses the dis- advantages of primary osseous reconstruction in ablative tumour surgery. Introduction Primary malignant tumours of the jaws are rare and especially the diagnosis .