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Metastases to the penis due to a primary carcinoma of the prostate are rare. In approximately half of the patients, malignant priapism is the main symptom. This study reports on a case of malignant priapism, caused by a direct and metastatic infiltration of the corpora cavernosa by a prostatic adenocarcinoma. Sonography gave hints, the magnetic resonance imaging verified the infiltration and aspiration cytology verified the carcinoma. Hemodynamics, evaluated by Doppler sonography, and intracavernosal blood gas analysis demonstrated a mixed high-low priapism without need of therapy.
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Schroeder-Printzen et al. (2010) studied this question.
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