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→Granulomatous and pyogranulomatous Inflammation
*Very similar to [[Teeth - Pathology#Mandibular Osteomyelitis|Mandibular Osteomyelitis]] ("lumpy jaw").
*Very similar to [[Teeth - Pathology#Mandibular Osteomyelitis|Mandibular Osteomyelitis]] ("lumpy jaw").
*'''Causal agent''': [[Actinobacillus lignieresi]] (small gram -ve) gets into [[Oral Cavity - Tongue - Anatomy & Physiology|tongue]] via small abrasions.
*'''Causal agent''': [[Actinobacillus lignieresii]] (small gram -ve) gets into [[Oral Cavity - Tongue - Anatomy & Physiology|tongue]] via small abrasions.
**Pathogen is very widespread in environment.
**Pathogen is very widespread in environment.
*Progressive disease - low virulence but high persistence so animal may stop eating and eventually die but can be treated.
*Progressive disease - low virulence but high persistence so animal may stop eating and eventually die but can be treated.
=====Other sites=====
=====Other sites=====
*Occasionally can see generalised infections but more commonly spreads to local lymph nodes of [[Alimentary - Anatomy & Physiology|alimentary tract]].
*Occasionally can see generalised infections but more commonly spreads to local lymph nodes of [[Alimentary - Anatomy & Physiology|alimentary tract]].
*Organism can be inhaled causing [[actinobacillus pneumonia]].
*Organism can be inhaled causing [[Actinobacillus lignieresii|actinobacillus pneumonia]].
*Can affect [[The Rumen - Anatomy & Physiology|rumen]] wall.
*Can affect [[The Rumen - Anatomy & Physiology|rumen]] wall.
*In skin forms a neoplastic like mass in dermis.
*In skin forms a neoplastic like mass in dermis.