Renal parenchymal disease: sonographic-histologic correlation.

A retrospective study of 109 patients who underwent renal biopsy was designed to correlate the sonographic appearance of the kidney with the histologic changes and clinical and laboratory findings in various renal parenchymal diseases. The clinical, pathologic, and sonographic data were analyzed blindly and independently by a team from each corresponding discipline. There was no correlation between the specific sonographic appearance and the type of renal disease.

Sonographic features of ATN and of acute rejection in renal allografts.

The sonographic changes occurring during post transplant acute tubular necrosis and rejection are discussed. Seven patients with proven ATN are shown to maintain normal sonographic features and exhibit normal hypertrophy. In contrast during acute rejection the findings in 21 patients included in order of frequency the following 1) sudden increase in renal volume, 2) prominent medullary pyramids, 3) abnormal echogenicity, 4) decreased amplitude of the central sinus echoes, 5) increased cortical thickness, 6) crescent shaped fluid collections and 7) indistinct corticomedullary boundary.