A case of pathological dilatation of seminal vesicle with chief complaint of male infertility

: A 32-year-old man with the chief complaint of male infertility for two years was admitted to our clinic for extensive examination of azoospermia. Physical examination revealed no abnormal findings in the bilateral testis, epididymis or prostate except for hard thickening of bilateral deferens ducts. Serum follicle stimulating hormone, luteinizing hormone, prolactin and testosterone levels were within normal range, and specimens from testicular biopsy demonstrated normospermatogenesis. Examination of urinary tract disclosed no abnormal findings. Seminal vesiculography, pelvic computed tomographic scan, and pelvic plain X-ray after seminal vesiculography showed that bilateral seminal vesicles were dilated remarkably without filling defect. A cap-shaped silicone prosthesis was installed on caudal portion of right epididymis. Fourteen days later, we punctured it, but enough seminal fluid to provide homologous artificial insemination was not obtained. Sixty five cases of pathological dilatation of seminal vesicle were collected from Japanese literature. A brief review on age, symptoms, complications, therapies and transferrin in seminal fluid were discussed.