Cancers invading Bone. 395 



like cauliflower excrescences, due to the epithelioma. The 

 periosteum has heen dissected off the back of the tibia to show 

 that the epithelioma had gone right through it. The fibula 

 shows the usual enlargement. G. C. 307. 



6. 471. Epithelioma invading" the Tibia.— Portion of a right 

 ^ leg — in spirit, illustrating the above. 



A large ulcer, almost entirely epitheliomatous, has ex- 

 tended down into the bone and greatly destroyed it. 



G. C. 180. 

 Presented hy Allan Burns, F.R.C.S.E. 



6. 472. Epitheliomatous Ulcer of the Leg*.— Plaster cast of a 



large ulcer of the leg, after amputation. 



From its irregular surface, the ulcer has evidently been 

 epitheliomatous, and must have attacked the bone. 



F. P. C. 2877. 



6. 473. Invasion of Os Calcis by Epithelioma. — Os calcis — 



macerated, illustrating the above. 



" Malignant disease of os calcis in a tailor, set. 30 years. 

 Syme's amputation at ankle-joint — only side flap — disease returned six 

 months after amputation at lower \ — patient recovered, no return of 

 Disease 18 months after." 



The bone has the appearance of having been gouged or 

 scooped out in the neighbourhood of the greater tuberosity. 

 Probably this has been due to an epithelioma. G. C. 3422. 



6.474. Scirrhus Cancer of the Sternum.— Sternum of a 



woman- — in spirit, illustrating the above. 



"The section of the sternum of a woman brought into my 

 Dissecting Room in autumn 1807. It appeared, from a cicatrix on 

 her breast not yet healed thoroughly, that her breast had been extirpatedl 



