Tehran University of Medical Sciences Journal of Craniomaxillofacial Research 2345-5489 4 1 2017 05 16 319 323 EN Amin Nowruzi Oral and maxillofacial surgery, Buali Hospital and Craniomaxillofacial Research Center, Islamic Azad University, Dental branch,Tehran, Iran. Shahrooz Shafayee Craniomaxillofacial Research Center and Department of Oral and Maxillofacial Surgery, Islamic Azad University, Dental branch, Tehran , Iran. Farzin Sarkarat Craniomaxillofacial Research Center and Department of Oral and Maxillofacial Surgery, Islamic Azad University, Dental branch, Tehran , Iran. Ali Fateh Oral and maxillofacial surgeon, Member of craniomaxillofacial Research Center / Islamic Azad University, Dental branch, Tehran, Iran. Zeinab Davoudmanesh Dentist, craniomaxillofacial Research Center, Tehran university of medical sciences and cranio-maxillo-facial Research Center / Islamic Azad University, Dental branch, Tehran, Iran. 2017 05 16 2017 05 16 Ewing Sarcoma (ES) of the mandible is a rare malignancy with poor prognosis which can be misdiagnosed as odontogenic inflammatory lesions or infections. We present a 7-year old male child which had been previously misdiagnosed and treated as an odontogenic abscess. This reported case describes the clinical, radiological and histopathological findings of oral ES with difficulties in management. https://jcr.tums.ac.ir/index.php/jcr/article/view/147 https://jcr.tums.ac.ir/index.php/jcr/article/download/147/166