T2-dark seminal vesicle

The prostate is both an accessory gland of the male reproductive system and a muscle driven mechanical switch between urination and ejaculation. It is found only in some mammals. [Source: Wikipedia ]

Synonyms
Low-intensity seminal vesicle on T2 image
May Be Caused by
 Common
Carcinoma
Hemorrhage
 Uncommon
Amyloidosis
Post-hormonal therapy
Radiation therapy
Seminal vesiculitis