Renal mobility has been studied for years. Albarran was perhaps the first to notice clinically that immobility of the kidney during respiration was a helpful diagnostic sign in perinephritis with adhesions to the renal fascia.
In 1925 and for many years since then, Mathé has called attention to the lack of normal motion in certain perirenal inflammatory conditions and perhaps was among the first, if not the first, to take advantage of the fact that the pyelogram taken in the erect posture and a second pyelogram taken in the prone posture would show limitation of renal motion and would aid him in the diagnosis of many obscure perirenal pathologic conditions.
About a year ago. following five years of observation, Hilgenfeldt reported a study of renal mobility. He took pyelograms in both the prone and the upright position, in deep inspiration and expiration in the prone position, and studied the variations
HESS E. RENAL MOBILITY. JAMA. 1938;110(22):1818–1823. doi:10.1001/jama.1938.02790220020008
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