Neck oedema - Atlas of swine pathology

Neck oedema

Where: skin and subcutaneous tissue

Possible causes: Anthrax

This lesion is the typical presentation in pigs of the ancient animal disease known as anthrax, caused by the large bacterium Bacillus anthracis. Affected pigs are usually older outdoor pigs, which are dull, not eating, with a firm, hot and painful swelling across their throat, neck and lower face. At autopsy, the neck and throat have firm gelatinous oedema fluid, with extensive infiltration of neck and jaw tissues with clear bloody wine-like fluid and gelatinous material. The local lymph nodes are greatly enlarged and oedematous, whereas internal organs including the liver and spleen appear relatively normal. It is important to confirm any suspicious deaths by staining and examination of dry smears of the lymph node and dark fluids in the neck. This smear diagnosis is often difficult in pigs, so it is also important to culture the lymph nodes. Anthrax bacteria occur in the soil only in defined endemic regions, so unless pigs are raised outdoors in those areas, the disease is rare. However, when it is does occur, it is usually a major dramatic episode, because of the strong ability of anthrax to cause public fear in humans. It is often difficult to easily dispose of affected pigs in a practical manner. In general, they should be destroyed on site by incineration.

Steven McOrist
Where

cardiovascular system

digestive system

intestines

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mouth

stomach

genitourinary system

bladder

female genitourinay tract

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mammary gland

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Disease

Diseases caused by bacteria

App

Clostridium difficile

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

Mycoplasma arthritis

Pasteurellosis

Postpartum Agalactia Syndrome

Salmonellosis

Streptococcal infections

Swine dysentery

Tetanus

Tuberculosis

Yersinia infection

Diseases caused by virus

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Aujeszky's disease

Blue eye disease

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Foot-and-mouth disease

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Ascariasis

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Mange

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Iron deficiency anemia

Mulberry heart disease

Osteoporosis, ricketts, Vit D deficiency

Toxicoses

Aflatoxicosis

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Zearalenone toxicosis

Other

Atresia ani

Congenital Tremor

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Other

Pityriasis rosea

Porcine stress syndrome

Rectal prolapse

Rectal stricture

Shoulder ulcers

Splay leg

Sunburn

Thrombocytopaenic purpura

Torsion of the stomach and the intestines

Uterine Prolapse

Vaginal and cervical prolapse

Vices

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