両側性および反復性顔面神経麻ひの統計的観察 Ｉ 原因について

Abstract

Bilateral or recurrent facial palsies were found in 70 patients (3.8%) among the 1856 patients with facial palsy whom we treated during the last fifteen years. According to the clinical course, these 70 patients were classified into the following four groups.1) Bilateral simultaneous facial palsy (15 patients, 0.8%)2) Bilateral recurrent facial palsy (3 patients, 0.2%)3) Bilateral alternating facial palsy (24 patients, 1.3%)4) Unilateral recurrent facial palsy (28 patients, 1.5%)The bilateral simultaneous facial palsies were caused by Bell's palsy in five patients, head trauma in three, the Melkerson-Rosenthal syndrome in one, otitis media in two, myasthenia gravis in two, polyneuritis in two. The etiologies of four other patients were unknown. In contrast to multiple etiologies of the bilateral simultaneous facial palsies, bilateral alternating and recurrent palsies were caused mostly by Bell's palsy (22 patients) and the Melkerson-Rosenthal syndrome (3 patients). Although the majority of unilateral recurrent facial palsies were caused by Bell's palsy (22 cases) and the Melkerson-Rosenthal syndrome (2 cases), it is noteworthy that intratemporal tumors such as neurinoma of the facial nerve (1 patient) and cholesteatoma in the petrous apex (2 cases) could be the cause of recurrence.