350 Diseases of Bone. 



whicli were extremely thin, we found, on attempting to cleanse the 

 tumour from one extremity to the other, that it was of a substance much 

 resembling callus ; in many places it was so firm and solid that after 

 trying in vain to divide it with a strong knife, we were obliged to betake 

 ourselves to the common amputation saw. 



"The cells of this bony tumour were everywhere filled with a 

 matter resembling thick cheese ; the tumour itself, from its great size, and 

 the entire appearance of the os humeri, seemed only to be attached to 

 that bone ; but upon a more minute examination was plainly a produc- 

 tion from its substance. The shoulder-bone could be traced through the 

 whole tumour ; but enlarged, spongy, and ulcerated. The upper part of 

 the scapula, the acromion process, and the outer end of the clavicle could, 

 during life, be plainly distinguished to be enlarged, and to form part of 

 the tumour ; and upon dissection, all the bones forming the shoulder- 

 joint were found to be deeply diseased. The upper and most bulky part 

 of the tumour seemed to proceed as much from these as from the os 

 humeri, and the joint was completely anchylosed." 



This portion of the tumour is evidently cartilaginous. 

 The nodules in most places are distinct, but over extensive 

 areas they have been softened and broken down. Calcareous 

 deposits are scattered throughout the substance. John Bell's 

 description of the tumour does not correspond exactly to 

 that of a cartilaginous tumour, when he speaks of matter 

 " resembling thick cheese," unless he means " of the consistence 

 of thick cheese." The reference, however, in the Catalogue 

 description of this specimen to the above case could be to no 

 other than that quoted. The clinical history as to pain and 

 rapid growth is also strikingly like Dr Watson's case of chondro- 

 sarcoma. (See ^0. 6. 367.) , G. C. 1270. 

 Presented by Professor John Thomson. 



6. 371. Chondro-Sarcoma of Humerus. — Photograph of the 



illustration of the above case in John Bell's " Principles of 

 Surgery," vol. iii. part i., to illustrate the relative size of the 

 tumour, and the appearance of the patient during life. 



G. C. 3586. 



6. 372. Chondro-Sarcoma (?) of Humerus.— Plaster cast — 

 coated with wax — of left upper extremity, showing growth of 



