What does seminal vesicle invasion mean?
Seminal vesicle invasion (SVI) is referred to as the secondary involvement of the seminal vesicles and ductus (vas) deferens by neoplasms not originating from the seminal vesicles themselves and are much more common than their primary counterparts.
How common is seminal vesicle cancer?
Primary tumors of seminal vesicles are extremely rare. A total of 51 documented cases of seminal vesicle carcinoma in men between the ages of 19 and 90 years old have been reported in the literature [1].