Abstract
In recent years, remarkable progress has been made in otological surgery through the application of the microscope. However it is not so evident in the field of opertions of another organs, But recently we have experienced a case of laryngeal diaphragm of a 6 years old boy, which we exposed and incised by the laryngofissure, and, observing the surface of the wound by the microscope, sutures were done with the finest silk thread. As the result the wound closed very easily and completely. We consider, in such a delicate operation, the microscope offers effective means of surgery.
