Changes

**Penetration of the chest

**Penetration of the chest

**From mediastinal abscessation

**From mediastinal abscessation

**Penetration from [[Oesophagus - Anatomy & Physiology|oesophagus]] or abdominal viscus (commonly [[Forestomach Inflammation - Pathology#Traumatic Reticulitis|bovine traumatic recticulitis]])

**Penetration from [[Oesophagus - Anatomy & Physiology|oesophagus]] or abdominal viscus (commonly [[Traumatic Reticulitis|bovine traumatic recticulitis]])

*Common acute forms:

*Common acute forms:

**Purulent  

**Purulent