Priapism in sickle-cell disease: a hematologist's perspective.

Area of Science:

• Hematology
• Urology
• Vascular Biology

Background:

• Priapism is a known complication of sickle cell disease (SCD) and other hemolytic anemias.
• Understanding the mechanisms of priapism in SCD is crucial for effective management.

Purpose of the Study:

• To provide urologists with a comprehensive review of priapism in SCD from a hematologist's perspective.
• To highlight current understanding and challenges in SCD-related priapism.

Main Methods:

• Literature search of Medline using terms priapism, erectile dysfunction, and sickle cell through July 2010.
• Expert opinion based on medical literature review.

Main Results:

• Priapism risk in SCD correlates with intravascular hemolysis severity.
• Hemolysis may reduce nitric oxide bioavailability and dysregulate penile adenosine signaling.
• Efficacy of traditional treatments is questioned, with growing support for early aspiration and irrigation.

Conclusions:

• Limited evidence supports medical prophylaxis for recurrent priapism in SCD.
• Nitric oxide and adenosine signaling pathways warrant further investigation.
• Multidisciplinary collaboration between hematologists and urologists is essential for managing sickle cell priapism.