Primary lymphoma of the temporal bone is an extremely rare finding in clinical practice. Although it is treated as a type of non-Hodgkin lymphoma, the absence of systemic signs and symptoms makes detection dependent on the tumor's local mass effect. In this article, we report a case of temporal bone lymphoma that caused XIIth nerve palsy. We also discuss the clinical manifestations of temporal bone lymphoma and the importance of imaging the head and neck when any idiopathic cranial nerve palsy develops.
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