The purpose of this article is to provide general information about Ewing sarcoma of the jaws. The differential diagnosis of Ewing's sarcoma, which has symptoms similar to odontogenic abscess, is vital for the patient. Diagnosis of this tumor, which shows clinical signs of abscess in most cases but has a very aggressive and destructive character, extends the life span of the patient. Otherwise, in cases of Ewing sarcoma that cannot be diagnosed, the patient is late in starting treatment and this situation negatively affects the success of the treatment. The percentage of this tumor, which is not known much by physicians because of its rarity, was mixed with odontogenic abscess, which was substantially high. In this presentation, the right mandibular premolar of a 13-year-old male patient who was referred to the Atatürk University Faculty of Dentistry Oral and Maxillofacial Radiology department, when the patient's right mandibular 1st molar tooth was removed and the patient's complaint of extraoral swelling continued, was reported to have a dental abscess in a health institution in the region where the patient lived. We aimed to evaluate the clinical and radiological evaluation of the Ewing sarcoma case, which appeared in the molar region, clinically showed extraoral swelling, and gave a radiographically multilocular radiolucent image.