Unilateral seminal vesicle cyst presenting as hematospermia; diagnosis established by transrectal prostatic ultrasound.

A case report of a unilateral seminal vesicle cyst presenting as painless hematospermia in a 44-year-old patient is presented. Ultrasound-guided needle aspiration of the cyst demonstrated a markedly elevated LDH level in the cyst fluid of unknown significance. Antibiotic injection under ultrasound guidance into the seminal vesicle cyst was accomplished. Laboratory evaluation on the cyst fluid is suggested.