This page is part of the Veterinary Reproductive Pathology site and is dedicated to the accessory genital glands of the stallion

Dr Rob Foster

OVC Pathobiology

University of Guelph

Pathology of the Accessory genital glands of the stallion

Table of Contents

Disease in general.

Ampullae

Spermiostasis

Stallions with the ejaculatory dysfunction "spermiostasis" are considered to accumulate spermatozoa in the ampullae, deferent ducts or epididymides. With ejaculation, there is necrozoospermia and teratozoospermia (detached heads). There may be 'ampullary plugs'. nAfter multiple semen collections, the quality improves and becomes normzoospermic. Lesions are not identified.

 

Frink AR, Podico G, Canisso IF (2023) Diaganosis and management of spermiostasis in a shetland stallion. Equine vet Educ 2023; 35: e491-498.

Vesicular glands

Adenitis

Purulent, abscessating vesicular adenitis is described, but appears to be uncommon. Bacterial vesicular adenitis and ampullitis occur sporadically and may be a cause of “colic.”

Neoplasia

A gelding with a perirectal mass was found to have a solid carcinoma. It arose from an accessory gland but the origin was unknown as it was large and infiltrative.

Suthers JM, Sardon D, Blundell R, Nikolaou G, Archer DC. Carcinoma of an accessory genital gland in a 23-year-old Camargue gelding. Equine Vet Edu 2015 27 e