[A rare entity: cystadenoma of the prostate]

The authors report the case of a 40-year-old man with cystadenoma of the prostate. This rare disease is difficult to diagnose despite a complete radiological assessment (transrectal and bladder ultrasound and MRI of pelvis). Only histological examination of the operative specimen demonstrated absence of malignancy. However, follow-up is required in view of the risk of recurrence of this prostatic lesion.