title: Bone Tumors
author: Howard D., M.D. Dorfman
description: Bone tumors, one of the least common neoplasms, account for less than 0.2 percent of all cancers. The clinical, radiographic, and pathological understanding and classification of these rare tumors has slowly developed over the past several decades. Henry Jaffe's descriptions of the pathology of bone tumors and his system of classification, recorded in Tumors and Tumorous Conditions of the Bones and Joints (Philadelphia: Lea and Febiger, 1958), is the basis for our current understanding of these neoplasms. Howard Dorfman, the senior author of Bone Tumors, was for many years Jaffe's protege at the Hospital for Joint Diseases in New York, and with his coauthor, Bogdan Czerniak, he has written an excellent book.
zlib_text: BONE SARCOMAS
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  CHAPTER 25
  Bone sarcomas
  Alan W.  Yasko, MD, and Warren Chow, MD
  Bone sarcomas are extremely rare neoplasms, which precludes determination
  of their true incidence. Approximately 2,400 new cases are identified annually
  in the United States. Population-based tumor registries seldom separate bone
  sarcomas into various histologic types.
  Osteosarcoma is the most common malignant primary bone tumor (excluding
  multiple myeloma), comprising 30% of all such malignancies. The annual inci-
  dence of osteosarcoma is approximately 800 cases per year in the United States.
  Chondrosarcoma is the second most common malignant primary tumor of
  bone; its annual incidence is approximately half that of osteosarcoma. Ewing’s
  sarcoma represents approximately 6% of all primary malignant bone tumors,
  with an annual incidence of 200 cases. Malignant fibrous histiocytoma (MFH)
  comprises < 1% of primary bone sarcomas.
  Epidemiology
  Gender The incidence of primary bone sarcomas is higher in males th