Abstract
Statistical analysis was performed on 271 patients with recurrent laryngeal nerve paralysis (RLNP) diagnosed at the Department of Otolaryngology-Head and Neck Surgery of Kumamoto university hospital between January 1999 and December 2004. There were 141 males (52.0%) and 130 females (48.0%). The left vocal fold was affected in 165 cases (60.9%), the right in 77 cases (28.4%) and both in 29 cases (10.7%). There were 124 cases of postoperative RLNP (45.8%), and 147 cases of RLNP not related to surgery (54.2%). The mean age of patients with RLNP not related to surgery was higher than that of those with postoperative RLNP for both males and females. With aging, RLNP due to malignant neoplasms decreased among males and that due to aneurysm or cerebral infarction increased. Among females, RLNP due to malignant neoplasms increased with age. We should be aware of such complications as aortic aneurysm and cerebral infarction as a cause of RLNP in addition to malignant neoplasms.
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