CANCER OF THE INFERIOR MAXII.LA. 



329 



portion of the right cheek, the jaw, and the intermaxillary space were 

 occupied by a large new growth, the outer part of which was ulcerated, 

 fungous, and bleeding. Owing to the animal rubbing the parts the 

 chest, shoulders, and forearms were covered with pus and blood. 



The tumour in the intermaxillary space was only of metastatic 

 origin. It covered 8 inches in length and 10 in width, and its centre 

 projected about 5 inches. It was very hard, bosselated, and adherent 

 to the skin, but moveable in relation to the jaw and the tongue. 



The tumour on the face occupied the lower portion of the cheek, 

 from the middle third of the masseterto the chin. In front it extended 

 beyond the zygomatic ridge ; behind it projected 3 inches to 3^ inches 

 above the general surface, and was in contact with the tumour in the 

 intermaxillary space. It was somewhat sharply defined, showed a 

 peripheral zone covered with skin, to which it was adherent, and a 

 central ulcerated, vegetating, cauliflower-like centre 4 inches across, in 



Fig. 30. — Internal surface of the right branch of the maxilla. 



the depths of which probing revealed softened, crepitant bone. The 

 masseter was distinctly atrophied. 



On examining the buccal cavity (which was offensive) the tumour 

 was found to have perforated the inner table of the maxilla and the 

 mucous membrane, and filled up the depression between the gums and 

 tongue, forming an elongated reddish mass, which covered the first 

 molars. 



The characters of this new growth, but especially its point of 

 origin in the maxilla, and its prompt extension to the lymphatic glands 

 and tissues of the cheek and mouth, indicated its epithelial character. 

 Histological examination of a fragment removed from the margin of 

 the ulcer on the face proved it to be an epithelioma of the lobulated 

 pavement variety. 



The animal was left in hospital as a subject for clinical study. No 

 surgical treatment was possible, and none was attempted. The cancer 



