What is traumatic reticulitis and why is it considered a forestomach disease?

• A. Ingestion of a sharp metal object penetrates the reticulum causing reticulitis and potential reticuloperitonitis
• B. Traumatic reticulitis is caused by viral infection of the forestomach
• C. It is a disease of the omasum unrelated to foreign bodies
• D. It is a dietary deficiency disease affecting the forestomachs

Answer: (A)

Traumatic reticulitis is an inflammatory reaction in the reticulum caused by a penetrating foreign body, typically a sharp piece of metal like a nail or wire that is ingested with feed. The reticulum is one of the forestomachs in ruminants, along with the rumen and omasum, so diseases that originate there are classified as forestomach disorders. The sharp object can lodge in the reticulum and perforate its wall, leading to reticulitis and possibly reticuloperitonitis or extension to other spaces such as the pleura or pericardium, depending on the path the object takes. Because the problem starts in the reticulum, an organ of the forestomach, this condition is inherently a forestomach disease.

This is not caused by a viral infection, nor is it a disease of the omasum, and it is not due to a nutritional deficiency; the underlying cause is foreign-body injury to the reticulum.