[Prostatic adenocarcinoma presenting as retrovesical cystic formation. Report of a case]

Presentation of one case of prostate adenocarcinoma with a peculiar evolution towards a large cystic formation at the expense of the left prostate lobe, clinically revealed as a picture of poor performance status and impaired consciousness secondary to obstructive renal failure. The benign evolution of the case, even though the patient received no specific therapy, is emphasized.