Tumours of Joints. 509 



the bone is not eaten away, spicules and plates of new bone are 

 thrown out from the surface, as in many of the specimens of 

 sarcoma in Series 6. The upper end of the fibula is bent out- 

 wards from the tibia, and there is a space between it and the 

 tibia, which has evidently been occupied by a mass of the 

 tumour. Plates of new bone appear to grow from the fibula 

 at the front of the head, but it is more probable that they are 

 part of the original tibial tumour here pressed against the fibula, 

 and dried in situ. G. C. 1145. 



Presented by Professor James Russell. 



7. 206. Sarcoma involving" the Knee-joint.— Section of a 



left knee-joint — in spirit, illustrating the above. 



The joint had been enormously enlarged owing to the 

 growth of a tumour, which on the outer side has burst through 

 the skin, and fungated in large masses. 



This has apparently been a sarcoma of the soft parts near 



the joint, which it has enveloped in its growth. 



F. P. C. 758. 

 See also Nos. 6. 402-404. 



7.207. Sarcoma (?) involving- the Carpal Bones. — Left 



wrist and metacarpal bones injected, and partially dissected — 

 in spirit, illustrating the above. 



This specimen is thus described by BeDJaniin Bell in his treatise on 

 "Diseases of Bones," jip. 160, 161 : — " The blood in this case was contained 

 in numerous distinct bony cysts, each of which was lined by a highly 

 vascular membrane. The blood also was fluid, and had not concreted in 

 the manner described by M. Breschet and myself. There was no pulsa- 

 tion in the tumour previous to the amputation of the hand, and on being 

 punctured, it discharged dark-coloured blood." 



This disease has involved the carpal bones and joints, and 

 seems to consist of smooth lined cysts, surrounded by a very 

 vascular substance; probably a cystic sarcoma. G. C. 319. 



Presented by Z os^vn Bell, F.R.C.S.E. 



