'''Caseous lesions/masses''' are commonly present within the the mouth, oesophagus, crop and glandular stomach.
'''Caseous lesions/masses''' are commonly present within the the mouth, oesophagus, crop and glandular stomach.
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The most frequently affected visceral organ is the '''[[Liver - Anatomy & Physiology | liver]]''', which can then occasionally cause distribution throughout the abdominal cavity.
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The most frequently affected visceral organ is the '''[[Liver - Anatomy & Physiology | liver]]''', which can then occasionally cause distribution throughout the abdominal cavity.
In very young birds (squabs) the '''navel''' region may be affected, encasing many visceral organs in a caseous mass.
In very young birds (squabs) the '''navel''' region may be affected, encasing many visceral organs in a caseous mass.