Azoospermia Due to Functional and Partial Ejaculatory Duct Obstruction: A Rare Case Report and Literature Review.

Ejaculatory duct obstruction (EDO) is a rare but treatable cause of male infertility. This case report describes a 28-year-old male with obstructive azoospermia. The patient came to our hospital after a fertility check-up revealed azoospermia. A subsequent semen analysis confirmed azoospermia. Transrectal ultrasonography (TRUS) and magnetic resonance imaging (MRI) revealed bilaterally enlarged seminal vesicles and thickened, calcified ejaculatory duct walls. The patient underwent transurethral seminal vesiculoscopy and transurethral resection of the ejaculatory ducts (TURED) for presumed partial EDO. Despite two transurethral seminal vesiculoscopy and TURED procedures, postoperative semen analysis still showed azoospermia. TRUS indicated non-contractile seminal vesicles and an unobstructed ejaculatory duct. The patient ultimately underwent percutaneous epididymal sperm aspiration for assisted reproductive technology and his spouse got pregnant. We identified a case of azoospermia caused by a rare combination of partial and functional ejaculatory duct obstruction. There are currently no reports of similar cases. This case report aims to provide valuable insights for diagnosing and treating EDO.