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14 Vesicular Adenitis
Mike Thompson
Willow Bend Animal Clinic, Holly Springs, MS, USA
The vesicular glands are paired glands located on the floor of the cranial pelvic cavity situated laterally and craniodorsal to the prostate and the origin of the paired ampullae. They have also been described as lateral to the ampullae and dorsal to the neck of the bladder. The size of the vesicles is age related. These glands have a lobar structure and each is normally 2–4 cm wide and 10–15 cm long (Figure 14.1). As bulls age, non‐infected glands may have considerable variation in size. The vesicular glands are easily palpated per rectum; hence an appreciation of the normal variation is important. As the major accessory sex glands in the bull, infection and inflammation of the vesicular glands has a significant impact on bull fertility. The glands secrete a clear fluid containing nutrients and buffers, which is discharged immediately before and during ejaculation through ducts that open into the urethra adjacent to the colliculus seminalis [1].
Figure 14.1 Normal vesicular glands.
Source: Courtesy Maarten Drost VISGAR.
The overall prevalence of vesicular adenitis has been reported to be between 1 and 10%, with the highest incidence occurring
