Blood in semen, a cause for concern?

Dear Ask The Doctor: Why would i have blood in my semen

Dear Brian: Blood in semen though common a occurrence may cause significant concern. The most common causes could be due to minor trauma to the prostate and infection of the seminal vesicles. Most cases of blood in the semen may resolve on their own but may require investigations and a visit to the urologist if bleeding is consistent. Your doctor may then have to rule out a tumor of the prostate.