"High-flow" priapism: treatment with superselective transcatheter embolization.

Hemodynamically, most cases of priapism occur as a result of venous outflow obstruction producing engorgement of the corpora cavernosa. In a small number of patients, however, the cause is uncontrolled arterial inflow, often from direct arterial trauma. The authors report two cases of arterial or "high-flow" priapism that were successfully treated with selective transcatheter embolization with autologous clot.