The Roentgen Diagnosis of Renal Inflammatory Masses—Special Emphasis on Angiographic Changes

Radiographic findings in 20 patients with renal inflammatory masses are reviewed. Angiographic findings depend on the degree of involvement and mode of spread of the disease. There is an increase in size and number of capsular vessels, abnormal intrarenal circulation manifested by slow and diminished blood flow, stretching of intralobar branches, loss of corticomedullary border, and loss of kidney outline. In the nephrographic phase multiple lucencies are seen in the cortex. In others, lines of increased densities alternate with strips of decreased densities. Correct diagnosis can be reached when findings on plain radiographs, intravenous urograms and angiograms are assessed.