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American Journal of Roentgenology, Vol 106, 491-505, Copyright © 1969 by American Roentgen Ray Society

SUPERIOR MARGINAL RIB DEFECTS

AN ETIOLOGIC CLASSIFICATION

E. NICHOLAS SARGENT M.D.1, A. FRANKLIN TURNER M.D.1, and GEORGE JACOBSON M.D.1

1 From the Department of Radiology, Los Angeles County—University of Southern California Medical Center, Los Angeles, California

Superior marginal rib defects are demonstrated in a variety of conditions. These are related for the most part to an imbalance between osteoblastic and osteoclastic activity.

The different mechanisms resulting in the bone defects are postulated and discussed. The many causes of superior marginal rib erosion are classified and examples are illustrated. Other disease entities in which superior marginal rib erosion might possibly be found are postulated so that the finding may be looked for and documented when encountered.

The finding is encountered with sufficient frequency that its diagnostic implications are important. Although nonspecific, the recognition of this sign on a chest roentgenogram should lead the roentgenologist to direct a further generalized investigation of the patient, resulting in a more definitive diagnosis.


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Copyright © 1969 by the American Roentgen Ray Society.