Anal cystography: new technique of cystography

A new technique of cystography used in 32 patients with a normal anorectum is presented. Sodium amidotrizoate (Uroselectan) is injected into the anal submucosa just above the pectinate line, and serial x-ray films of the urinary tract are taken. The contrast medium diffuses from the anal submucosa to the vesical plexus. Within thirty minutes of injection, the whole bladder wall is opacified. In no film up to two hours did the dye appear in the pyelocalyceal system or the ureters. The route adopted by the contrast medium to show in the bladder wall is discussed, and the indications of the technique are outlined.