In 1914 I presented a paper on the "Injection of the Sphenopalatine Ganglion in some of the Commoner Diseases of the Nose1." I was very much surprised to learn that the average rhinologist did not interest himself in this particular phase of our specialty. In the past few years, however, considerable interest has been taken in the subject, although there is not, even now, attributed to it the importance which I consider it deserves.
To understand the etiology of these various neuroses, a fairly clear conception is necessary of the anatomic relationship of the ganglion to the various accessory sinuses of the nose; therefore I will review the anatomy of this region rather extensively. The sphenopalatine, Meckel's or nasal ganglion is deeply placed in the sphenomaxillary fossa, close to the sphenopalatine foramen. It is triangular and is situated immediately below the superior maxillary nerve, just as it passes the