Atlas of pathology

Preputial diverticulum ulcer

Where: genitourinary system, male genitourinay tract

Differential diagnosis: BrucellosisClassical Swine FeverAfrican swine fever

Such lesions are not uncommon in mature boars and can be palpated via the preputial orifice with a small finger (with the boar adequately restrained). A small proportion of lesions will lead to haemorrhage either sporadically or as here persistently.

Whilst Chlamydophila and Brucella suis have been suggested as a cause of the ulcer, the role of such infections is not clear and most lesions are probably the result of mixed non-specific infection in the preputial diverticulum.

Preputial ulcers associated with ASF/CSF infection are not well recognised but could theoretically occur if more widespread haemorrhagic lesions are seen. (Grossly this lesion resembles a button ulcer in the mucosa of the colon).

Local instillation of broad spectrum antibiotics (such as intramammary preparations used outwith their licence) and regular expression of accumulated fluid can lead to healing of the lesion but severe or long standing cases respond poorly to treatment. Ablation surgery under anaesthesia has been suggested but is of dubious economic justification.

The presence of blood in semen is not necessarily spermicidal but discolouration of semen would render it unacceptable for supply.

Mark White
Where

cardiovascular system

digestive system

intestines

liver

mouth

stomach

genitourinary system

bladder

female genitourinay tract

kidney

male genitourinay tract

mammary gland

lymphatic system

lymph nodes

spleen

thymus

tonsils

musculoskeletal system

nervous system

other

respiratory system

lungs

nasal cavity

skin and subcutaneous tissue

Disease

Diseases caused by bacteria

App

Clostridium novyi

Clostridium perfringens

Mycoplasma suis

Actinobacillosis

Anthrax

Atrophic Rhinitis

Bordetelosis

Brucellosis

Colibacillosis

Colitis

Edema disease

Enzootic Pneumonia (EP)

Erysipela

Exudative Epidermitis

Glässer disease

Ileitis

Leptospirosis

Mycoplasmal arthritis

Pasteurellosis

Salmonellosis

Streptococcal infections

Swine dysentery

Tuberculosis

Yersinia infection

Diseases caused by virus

African swine fever

Aujeszky's disease

Blue eye disease

Classical Swine Fever

Encephalomyocarditis

Foot-and-mouth disease

Influenza

Japanese B Encephalitis

Nipah virus disease

Porcine circovirosis

Porcine cytomegalovirus infection

Porcine parvovirus infection

Porcine respiratory coronavirus infection

PRRS

Rotavirus infection

Diseases caused by parasites

Ascariasis

Coccidiosis

Mange

Metastrongylosis

Trichinellosis

Trichuriasis

Other

Epitheliogenesis imperfecta

Frostbite

Gastric ulcers

Hernias

Osteochondrosis

Other

Pityriasis rosea

Rectal prolapse

Shoulder ulcers

Sunburn

Thrombocytopaenic purpura

Torsion of the stomach and the intestines

Vice

Nutritional deficiencies

Biotin deficiency

Mulberry heart disease

Toxicoses

Aflatoxicosis

Ergotism

Zearalenone toxicosis