Renal subcapsular rim sign. Radionuclide pattern.
The renal cortical rim sign is a radiological term describing the thin peripheral nephrogram of 2-4 mm thick which is from the peri-renal capsular collateral circulation in an otherwise nonfunctioning kidney. Radionuclides are used frequently in the estimation of renal function. A neonate with renal vein thrombosis demonstrated a rim sign on renal scan with Technetium DTPA. The rim sign on renal scan can be differentiated from severe hydronephrosis or multicystic kidney both of which may have a peripheral thin cortex which functions late on the renal scan. The rim sign in renal vein thrombosis was best visualized during the early blood pool phase when there was a considerable amount of radioactivity in the blood pool.
D006801:Humans; D007231:Infant, Newborn; D007235:Infant, Premature, Diseases / Q000000981:diagnostic imaging*; D004369:Pentetic Acid; D011877:Radionuclide Imaging; D012082:Renal Veins; D013667:Technetium; D016284:Technetium Tc 99m Pentetate; D013927:Thrombosis / Q000000981:diagnostic imaging*
D013667:Technetium; D004369:Pentetic Acid; D016284:Technetium Tc 99m Pentetate