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[Galen's anastomosis, an anatomic study in man].

The Galen's anastomosis connects superior and recurrent laryngeal nerves and its anatomy and physiology still remain unknown. In humans it can be found in 30 to 60% of cases, according to classical anatomy books. In this study the authors report the anatomy of 47 fresh half-larynx. They have demonstrated the invariable existence of an anastomosis between superior and recurrent laryngeal nerves, either as a single nerve, or as a plexus.