Abstract
T-cell lymphoblastic lymphomas (T-LBL), defined as neoplasms of immature T cells, are the most common paediatric T-cell lymphoma. These account for approximately 90% of all lymphoblastic lymphomas. The primary manifestation of T-LBL rarely occurs in the oral cavity. In this case report, we describe a case of primary T-LBL affecting the maxilla and mandible of a 10-year-old male patient. This is the first case of T-LBL reported in this region. We emphasize that early diagnosis of aggressive lesions in the maxilla or mandible is one of the responsibilities of oral physicians, who can help patients to overcome the many challenges of malignant diseases.