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The purpose of this article is to report a few cases of cartilaginous tumor of the skeleton, which represent in part unusual forms of otherwise well known conditions (enchondroma, single osteochondroma and multiple cartilaginous exostoses) and in part an apparently rare form of a multiple intra-articular tumor formation which, to my knowledge, has not yet been described in the literature. The case which will be reported last is one of a true intra-articular osteochondroma, which developed in more than one joint on the basis of a peculiar hyperplastic change of joint cartilage and which had to be differentiated from similar formations as they develop typically in persons with hypertrophic arthritis and from other conditions usually considered as neoplastic changes of the joint capsule, such as chondromatosis of the joints.
As is so common in cases of cartilaginous tumor formation of the skeleton, besides the cartilaginous component a considerable amount of
FREUND E. UNUSUAL CARTILAGINOUS TUMOR FORMATION OF THE SKELETON. Arch Surg. 1936;33(6):1054-1077. doi:10.1001/archsurg.1936.01190060144007