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The Journal of Bone and Joint Surgery (American) 81:882-92 (1999)
© 1999 The Journal of Bone and Joint Surgery, Inc.

Instructional Course Lecture

Instructional Course Lectures, The American Academy of Orthopaedic Surgeons - New Developments in the Staging and Imaging of Soft-Tissue Sarcomas*{dagger}

EDWARD Y. CHENG, M.D.{ddagger} and ROBY C. THOMPSON, JR., M.D.{ddagger}, MINNEAPOLIS, MINNESOTA

An Instructional Course Lecture, American Academy of Orthopaedic Surgeons

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   Introduction
 
New developments in staging have given greater importance to the imaging of soft-tissue sarcomas since the time of the last articles on soft-tissue tumors in the Instructional Course Lectures9,19 or even more recent reviews37. Whereas previous articles have focused on the diagnosis, treatment, and molecular biology of benign19 and malignant9 soft-tissue tumors, the current article will present a new modification of the staging system that has been proposed by the American Joint Committee on Cancer38. Imaging techniques and unique characteristics of soft-tissue tumors will be discussed in order to demonstrate how they are related to the new criteria for staging.


   Historical Development of Staging Systems
 
The main purpose of staging a tumor is to determine a patient's prognosis and to help to direct treatment. Malignant tumors have been described as having a life cycle. Therefore, staging identifies specific time-points in a tumor's life cycle (Fig. 1). Staging is usually done at . . . [Full Text of this Article]


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