To report one case of utriculum cyst treated endoscopically.We describe the case of a mid-age male patient consulting for long-term monosymptomatic hemospermia. Rectal digital examination revealed a non suspicious adenomatous prostate. Transrectal ultrasound showed a complicated utriculum cyst.Endoscopical marsupialization of the cyst was performed with complete remission of hemospermia.Transrectal ultrasound should be performed in all patients presenting with long-term hemospermia. Endoscopical marsupialization of the mullerion duct cyst is indicated in symptomatic patients or those with complex cysts on ultrasound, offering a high cure/improvement rate in this group of patients without secondary effects.