These three cases represent types of malignant bone tumors. Cases 1 and 3 differ chiefly in their microscopic appearance. Case 2 differs from the other two in gross structure, being of less dense and more varied consistency. It is a more virulent type, growing to enormous dimensions in eight months but probably not metastasizing, while the tumor in Case 1 did not increase very greatly in size in the same length of time.
(C) 1928 All Rights Reserved.The Journal of Bone and Joint Surgery, Inc.