[The endoscopy of paranasal sinuses. Diagnostic and therapeutic possibilities (author's transl)].

This paper deals with further experiences in endoscopy of the maxillary sinus and in possibilities of endoscopy of frontal and sphenoidal sinuses. Some coloured photographs taken during endoscopy are shown. As the result of 301 sinuscopies of maxillary sinus performed, it could be shown that in 36% of the cases x-ray findings didn't exactly correspond with the endoscopy findings. In further 22% there was no correlation at all between the x-rays and findings at operation. This shows the great importance of sinuscopy and reveals its diagnostic values. The author used the endoscopy of the maxillary sinus not only for diagnostic purposes but for the treatment of chronic purulent sinusitis as well as complete removal of the socalled solitary cysts of the mucous membrane. A therapeutic gap between the two extreme (conservative treatment on one side and radical surgery Caldwell-Luc on the other side) ist bridged using this method. Finally the indications for endoscopy of maxillary and frontal sinuses are shown clearly in a table.