The results obtained after treating 13 patients with low flow priapism diagnosed by cavernous gasometry, penile ecodoppler and cavernosography are explained. Seven cases of priapism (53%) developed following intracavernous injection of vasoactive drugs and had a good response to aspiration lavage and alpha-agonist medication. None of the cases needed shunt technique to achieve detumescence and all showed good evolution with regard to the erectile function. Six cases of priapism (47%) were idiopathic and they all needed some type of venous by-pass. Later, only one had normal erections.