Prott W
Laryngol Rhinol Otol (Stuttg). 1975 Aug;54(8):689-91.
Clinical case report of a liquorrhéa of the maxillary sinus, caused by an arachnoidal cyst of the ethmoidal cell system. The cerebrospinal fluid was drained by a canalis ethmoideo-maxillaris into the maxillary sinus. The clinical signification of the canalis ethmoideo-maxillaris, canalis fronto-(ethmoideo)-maxillaris and canalis sphenoideo-(ethmoideo)-maxillaris in cases of rhinobasal fractures and cases of meningitis have been discussed. 2 X-ray and 1 endoscopical photo.