RESUMO
Mastoiditis is a complication of the medium otitis characterized by suppuration and destruction of the mastoid cells and the pyramid petrosa; its tuberculous etiology has decreased in the last 40 years. Paralysis resulting from mastoiditis is more common in children. The incidence of mastoiditis has risen, although there are no reports in the literature associated with renal transplants. A 37-year-old man developed paralysis of the seventh cranial nerve associated with tuberculous mastoiditis 71 days after living donor-related renal transplant while on immunosuppressive therapy. The mastoiditis diagnosis was clinical and radiologic, the axial tomography being the election examination. The paralysis of the facial nerve happens for the easy destruction of the bony capsule that involves it. When treated early with tuberculostatic drugs, surgical procedures can be avoided in patients with tuberculous etiology in a mastoiditis, especially in an immunocompromised patient.