Atlas of pathology

Cutaneous granuloma

Where: skin and subcutaneous tissue

Differential diagnosis: ViceOther

These pigs show typical signs of injection site reactions and infections, due to a bacterial granuloma in the skin. The usual lesion is a noticeable 2 to 5 cm diameter raised lump in the skin of their neck. The lumps are very firm and painful to the pig when touched. In some pigs, the skin over the centre of the lumps can become ulcerated, with a dark scab formation. Pig farms and pig pens are dirty contaminated environments. When a single syringe and needle is used on many pigs in a pen, there is the strong possibility to collect environmental bacteria on the needle. When that needle is used again on the next pig, then these environmental bacteria can be injected directly into the pig tissue. These mixed bacteria can then set up a local inflammation reaction and create this type of granulomatous lump. This type of needle contamination is more likely when injecting larger pigs housed in groups.

Steven McOrist
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

Splay leg

Sunburn

Thrombocytopaenic purpura

Torsion of the stomach and the intestines

Vice

Nutritional deficiencies

Biotin deficiency

Mulberry heart disease

Toxicoses

Aflatoxicosis

Ergotism

Fumonisin toxicosis

Zearalenone toxicosis