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PROF. P. J. CADIOT. 
Another examination revealed nothing, neither in the nose nor 
in the mouth. The roaring becomes louder and louder, to 
stop only when the animal is at rest in the stable. Soon diffi¬ 
culties of deglutition appeared, salivation is very abundant. One 
morning the mare is found dead in her box. Post-mortem ex¬ 
plained these singular phenomena. The tumor, starting on the 
ethmoid, was formed of two well-distinct parts, one filling partly 
the frontal sinus, without adhesions to the walls of this cavity ; the 
other had grown along the superior turbinated bone in the nasal 
cavity and had developed considerably; it had passed through 
the gutteral opening of the nasal cavities, through the pharynx, 
and at last reaching the larynx, had entered into it, obstructed 
it, and killed the animal. The histological study of this tumor 
showed that it was a myxoma. 
With its narrow base of implantation on the ethmoid, its 
excision would certainly have been easy. 
t 
Labat, in 1888, and Moussu, in 1893, have each related a 
case of tumor of the sinuses with ablation, followed by success. 
Ivabat’s patient was eight years old. The superior maxillary 
and frontal sinuses of the left side were the seat of a polypus 
growth which deformed the wall. A triangular piece of the 
external plate of the superior maxillary sinus, measuring 
7x9 and 10 centimeters, was removed. The tumor, which was 
inserted on the floor of the sinus, was removed in toto. The 
wound of the bone diminished considerably, but never healed 
entirely. 
The mare operated upon by Moussu was seven years old. 
The superior and inferior maxillary sinuses were filled with a 
tumor, which had thinned down and perforated the external 
plate of the bone. The internal plate of the superior maxillary 
sinus, as well as fractions of the nasal, lachrymal, and zygomatic 
were destroyed. The skin dissected around the tumor, an open¬ 
ing 15 by 12 centimeters was made through the bones of the face, 
the tumor removed in two sections, and it became necessary to 
extirpate a part of the internal wall of the sinuses and of the 
upper turbinated bone, thus leaving exposed the roots of the 
