By J.-F. Ginestié, A. Romieu
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Extra info for Radiologic Exploration of Impotence
There exists a late parenchymal, cavernous, stage of opacification involving the posterior two thirds of the organ, rarely the anterior third. In two cases we have noted the existence of two deep arteries for each corpus cavernosum . • Dorsal artery of the penis It reaches the upper border of the penis, travels along it as far as the base of the glans, and ends at the level of the arterial corona of the glans. In certain cases there is retrograde opacification of the dorsal artery on the opposite side, starting at the arterial corona.
This group includes atypical origins of the obturator artery and cases where its anastomoses with the inferior epigastric artery are hemodynamically predominant. Course The obturator artery first forms a lateral concavity, then runs for several centimeters along the pelvic brim (linea terminalis) or a few centimeters above or below it. It then crosses the iliopu-" bic ramus and reaches the upper border of the obturator foramen where it ends. Among its branches, only the one to the internal obturator muscle is usually discernible.
It is easily identified, because its opacification is accompanied by a stage ofbulbar parenchyma, appearing as early as the arterial stage. • Urethral artery This branch arises anterior to the artery of the penile bulb. It is of very small caliber and is rarely visible on the arteriographs. It supplies the corpus cavernosum and is characterized by its projection below the urethra. arteriography of internal pudendal artery/49 Fig . 21 - Anatomy of dorsal artery of penis and deep artery Circonflex arteries are easily seen.