INTRODUCTION
Malignant lymphomas of the paranasal sinuses present with few symptoms during the early stages. Thus, imaging studies are benefical for their diagnosis. Magnetic resonance imaging (MRI), which has a higher density resolution than that of computed tomography (CT), is useful for diagnosing paranasal tumors.
We encountered a case of malignant lymphoma of the maxillary sinus in which CT findings suggested malignancy but MRI findings suggested an inflammatory disease.